Physics experiments for kids. Physical experiments for children at home

Do you love physics? You love experiment? The world of physics is waiting for you!
What could be more interesting than experiments in physics? And of course, the simpler the better!
These exciting experiences will help you see extraordinary phenomena light and sound, electricity and magnetism Everything you need for experiments is easy to find at home, and the experiments themselves simple and safe.
Eyes are burning, hands are itching!
Go explorers!

Robert Wood - the genius of experiments..........
- Up or down? Rotating chain. Salt fingers.......... - Moon and diffraction. What color is the fog? Rings of Newton.......... - Top in front of the TV. Magic propeller. Ping-pong in the bath.......... - Spherical aquarium - lens. artificial mirage. Soap glasses .......... - Eternal salt fountain. Fountain in a test tube. Spinning spiral .......... - Condensation in the bank. Where is the water vapor? Water engine.......... - A popping egg. Inverted glass. Whirlwind in a cup. Heavy paper..........
- Toy IO-IO. Salt pendulum. Paper dancers. Electric dance..........
- Ice Cream Mystery. Which water freezes faster? It's cold and the ice is melting! .......... - Let's make a rainbow. A mirror that does not confuse. Microscope from a drop of water
- Snow creaks. What will happen to the icicles? Snow flowers.......... - Interaction of sinking objects. The ball is touchy ..........
- Who quickly? Jet balloon. Air carousel .......... - Bubbles from the funnel. Green hedgehog. Without opening the bottles.......... - Candle motor. A bump or a hole? Moving rocket. Diverging Rings..........
- Multi-colored balls. Sea dweller. Balancing Egg..........
- Electric motor in 10 seconds. Gramophone..........
- Boil, cooling .......... - Waltzing dolls. Flames on paper. Robinson Feather..........
- Faraday experience. Segner wheel. Nutcrackers .......... - Dancer in the mirror. Silver plated egg. Trick with matches .......... - Oersted's experience. Roller coaster. Don't drop it! ..........

Body weight. Weightlessness.
Experiments with weightlessness. Weightless water. How to reduce your weight..........

Elastic force
- A jumping grasshopper. Jumping ring. Elastic coins..........
Friction
- Crawler coil..........
- A sunken thimble. Obedient ball. We measure friction. Funny monkey. Vortex rings..........
- Rolling and sliding. Friction of rest. Acrobat walks on a wheel. Brake in the egg..........
Inertia and inertia
- Get the coin. Experiments with bricks. Wardrobe experience. Experience with matches. coin inertia. Hammer experience. Circus experience with a jar. The ball experience....
- Experiments with checkers. Domino experience. Egg experience. Ball in a glass. Mysterious skating rink..........
- Experiments with coins. Water hammer. Outwit inertia..........
- Experience with boxes. Checkers experience. Coin experience. Catapult. Apple momentum..........
- Experiments with inertia of rotation. The ball experience....

Mechanics. Laws of mechanics
- Newton's first law. Newton's third law. Action and reaction. Law of conservation of momentum. Number of movement..........

Jet propulsion
- Jet shower. Experiments with reactive pinwheels: air spinner, jet balloon, ethereal spinner, Segner's wheel ..........
- Balloon rocket. Multistage rocket. Impulse ship. Jet boat..........

Free fall
- Which is faster..........

Circular motion
- Centrifugal force. Easier on turns. Ring experience....

Rotation
- Gyroscopic toys. Clark's wolf. Greig's wolf. Flying top Lopatin. Gyro machine ..........
- Gyroscopes and tops. Experiments with a gyroscope. Spinning Top Experience. Wheel experience. Coin experience. Riding a bike without hands. Boomerang Experience..........
- Experiments with invisible axes. Experience with staples. Matchbox rotation. Slalom on paper..........
- Rotation changes shape. Cool or raw. Dancing egg. How to strike a match..........
- When the water does not pour out. A little circus. Experience with a coin and a ball. When the water is poured out. Umbrella and separator..........

Statics. Equilibrium. Center of gravity
- Roly-ups. Mysterious matryoshka..........
- Center of gravity. Equilibrium. Center of gravity height and mechanical stability. Base area and balance. Obedient and naughty egg..........
- Human center of gravity. Fork balance. Funny swing. Diligent sawer. Sparrow on a branch..........
- Center of gravity. Pencil competition. Experience with unstable balance. Human balance. Stable pencil. Knife up. Cooking experience. Experience with a saucepan lid ..........

The structure of matter
- Fluid model. What gases does air consist of? The highest density of water. Density tower. Four floors..........
- Plasticity of ice. A popped nut. Properties of a non-Newtonian fluid. Growing crystals. Properties of water and egg shells..........

thermal expansion
- Expansion of a rigid body. Ground stoppers. Needle extension. Thermal scales. Separation of glasses. Rusty screw. Board to smithereens. Ball expansion. Coin Expansion..........
- Expansion of gas and liquid. Air heating. Sounding coin. Water pipe and mushrooms. Water heating. Snow heating. Dry from water. The glass is creeping..........

Surface tension of a liquid. wetting
- Plateau experience. Darling experience. Wetting and non-wetting. Floating razor..........
- Attraction of traffic jams. Adhesion to water. Miniature Plateau experience. Bubble..........
- Live fish. Experience with a paperclip. Experiments with detergents. Color streams. Rotating spiral ..........

Capillary phenomena
- Experience with a blooper. Experience with pipettes. Experience with matches. Capillary pump..........

Bubble
- Hydrogen soap bubbles. Scientific preparation. Bubble in a bank. Colored rings. Two in one..........

Energy
- Transformation of energy. Curved strip and ball. Tongs and sugar. Photoexposure meter and photoelectric effect ..........
- Transfer of mechanical energy into heat. Propeller experience. Bogatyr in a thimble..........

Thermal conductivity
- Experience with an iron nail. Tree experience. Glass experience. Spoon experience. Coin experience. Thermal conductivity of porous bodies. Thermal conductivity of gas ..........

Heat
- Which is colder. Heating without fire. Heat absorption. Radiation of heat. Evaporative cooling. Experience with an extinguished candle. Experiments with the outer part of the flame ..........

Radiation. Energy transfer
- Transfer of energy by radiation. Experiments with solar energy

Convection
- Weight - heat controller. Experience with stearin. Creating traction. Experience with weights. Spinner experience. Spinner on a pin..........

aggregate states.
- Experiments with soap bubbles in the cold. Crystallization
- Frost on the thermometer. Evaporation on the iron. We regulate the boiling process. instant crystallization. growing crystals. We make ice. Ice cutting. Rain in the kitchen....
- Water freezes water. Ice castings. We create a cloud. We make a cloud. We boil snow. Ice bait. How to get hot ice..........
- Growing crystals. Salt crystals. Golden crystals. Large and small. Peligo's experience. Experience is the focus. Metallic crystals..........
- Growing crystals. copper crystals. Fairy beads. Halite patterns. Home hoarfrost..........
- Paper bowl. Experience with dry ice. Experience with socks

Gas laws
- Experience on the Boyle-Mariotte law. Experiment on Charles' law. Let's check the Claiperon equation. Checking Gay-Lusac's law. Focus with a ball. Once again about the Boyle-Mariotte law ..........

Engines
- Steam engine. Experience of Claude and Bouchereau..........
- Water turbine. Steam turbine. Wind turbine. Water wheel. Hydro turbine. Windmills-toys..........

Pressure
- Solid body pressure. Punching a coin with a needle. Ice cutting..........
- Siphon - Tantalum vase..........
- Fountains. The simplest fountain Three fountains. Fountain in a bottle. Fountain on the table..........
- Atmosphere pressure. Bottle experience. Egg in a decanter. Bank sticking. Glass experience. Canister experience. Experiments with a plunger. Bank flattening. Experience with test tubes..........
- A blotter vacuum pump. Air pressure. Instead of the Magdeburg hemispheres. Glass-diving bell. Carthusian diver. Punished curiosity..........
- Experiments with coins. Egg experience. Newspaper experience. School gum suction cup. How to empty a glass..........
- Pumps. Spray..........
- Experiments with glasses. The mysterious property of the radish. Bottle experience..........
- Naughty cork. What is pneumatics. Experience with a heated glass. How to raise a glass with the palm of your hand..........
- Cold boiling water. How much water weighs in a glass. Determine the volume of the lungs. Persistent funnel. How to pierce a balloon so that it does not burst ..........
- Hygrometer. Hygroscope. Cone barometer .......... - Barometer. Do-It-Yourself Aneroid Barometer. Ball barometer. The simplest barometer .......... - Light bulb barometer .......... - Air barometer. water barometer. Hygrometer..........

Communicating vessels
- Experience with the picture..........

Law of Archimedes. Pulling force. Swimming bodies
- Three balls. The simplest submarine. Experience with grapes. Does iron float?
- Draft of the ship. Does the egg float? Cork in a bottle. Water candlestick. Sinking or floating. Especially for the drowning. Experience with matches. Amazing egg. Does the plate sink? The riddle of scales ..........
- A float in a bottle. Obedient fish. Pipette in a bottle - Cartesian diver..........
- Ocean level. Boat on the ground. Will the fish drown. Scales from a stick ..........
- Law of Archimedes. Live toy fish. Bottle level..........

Bernoulli's law
- Funnel experience. Water jet experience. Ball experience. Experience with weights. Rolling cylinders. stubborn sheets..........
- Bending sheet. Why doesn't he fall. Why does the candle go out. Why doesn't the candle go out? Blame the air flow..........

simple mechanisms
- Block. Polyspast ..........
- Lever of the second kind. Polyspast ..........
- Lever arm. Gate. Lever scales..........

fluctuations
- Pendulum and bicycle. Pendulum and the globe. Fun duel. Unusual pendulum ..........
- Torsional pendulum. Experiments with a swinging top. Rotating pendulum..........
- Experience with the Foucault pendulum. Addition of vibrations. Experience with Lissajous figures. Pendulum resonance. Hippo and bird..........
- Funny swing. Vibrations and Resonance ..........
- Fluctuations. Forced vibrations. Resonance. Seize the moment..........

Sound
- Gramophone - do it yourself ..........
- Physics of musical instruments. String. Magic bow. Ratchet. Drinking glasses. Bottlephone. From the bottle to the organ..........
- Doppler effect. sound lens. Chladni's experiments ..........
- Sound waves. Spreading sound..........
- Sounding glass. Straw flute. String sound. Reflection of sound..........
- Phone from a matchbox. Telephone exchange ..........
- Singing combs. Spoon call. Drinking glass..........
- Singing water. Scary wire..........
- Audio oscilloscope..........
- Ancient sound recording. Cosmic voices....
- Hear the beat of the heart. Ear glasses. Shock wave or clapperboard ..........
- Sing with me. Resonance. Sound through the bone..........
- Tuning fork. Storm in a glass. Louder sound..........
- My strings. Change the pitch. Ding Ding. Crystal clear..........
- We make the ball squeak. Kazu. Drinking bottles. Choral singing..........
- Intercom. Gong. Crow's glass..........
- Blow out the sound. Stringed instrument. Little hole. Blues on the bagpipe..........
- Sounds of nature. Drinking straw. Maestro, march..........
- A speck of sound. What's in the bag. Surface sound. Disobedience Day..........
- Sound waves. Visible sound. Sound helps to see ..........

Electrostatics
- Electrification. Electric coward. Electricity repels. Soap bubble dance. Electricity on combs. Needle - lightning rod. Electrification of the thread ..........
- Bouncing balls. Interaction of charges. Sticky ball..........
- Experience with a neon light bulb. Flying bird. Flying butterfly. Living world..........
- Electric spoon. Saint Elmo's fire. Water electrification. Flying cotton. Soap bubble electrization. Loaded frying pan..........
- Electrification of the flower. Experiments on the electrification of man. Lightning on the table..........
- Electroscope. Electric theater. Electric cat. Electricity attracts...
- Electroscope. Bubble. Fruit Battery. Gravity fight. Battery of galvanic elements. Connect the coils..........
- Turn the arrow. Balancing on the edge. Repulsive nuts. Turn on the light..........
- Amazing tapes. Radio signal. static separator. Jumping grains. Static rain..........
- Wrap film. Magic figurines. Influence of air humidity. Living doorknob. Sparkling clothes..........
- Charging at a distance. Rolling ring. Crack and clicks. Magic wand..........
- Everything can be charged. positive charge. The attraction of bodies static adhesive. Charged plastic. Ghost leg..........

Experiments at home are a great way to introduce children to the basics of physics and chemistry, and make it easier to understand complex abstract laws and terms through visual demonstration. Moreover, for their implementation it is not necessary to acquire expensive reagents or special equipment. After all, without hesitation, we conduct experiments every day at home - from adding slaked soda to the dough to connecting batteries to a flashlight. Read on to find out how easy, simple and safe it is to conduct interesting experiments.

Does the image of a professor with a glass flask and scorched eyebrows immediately appear in your head? Do not worry, our chemical experiments at home are completely safe, interesting and useful. Thanks to them, the child will easily remember what exo- and endothermic reactions are and what is the difference between them.

So, let's make hatching dinosaur eggs that can be successfully used as bath bombs.

For experience you need:

  • small dinosaur figurines;
  • baking soda;
  • vegetable oil;
  • lemon acid;
  • food coloring or liquid watercolors.
  1. Pour ½ cup baking soda into a small bowl and add about ¼ tsp. liquid paints (or dissolve 1-2 drops of food coloring in ¼ tsp of water), mix the baking soda with your fingers to get an even color.
  2. Add 1 tbsp. l. citric acid. Mix dry ingredients thoroughly.
  3. Add 1 tsp. vegetable oil.
  4. You should end up with a crumbly dough that barely sticks together when pressed. If it does not want to stick together at all, then slowly add ¼ tsp. butter until you reach the desired consistency.
  5. Now take a dinosaur figurine and cover it with dough in the shape of an egg. It will be very brittle at first, so it should be left overnight (minimum 10 hours) for it to harden.
  6. Then you can start a fun experiment: fill the bathroom with water and drop an egg into it. It will hiss furiously as it dissolves into the water. It will be cold when touched, as it is an endothermic reaction between an acid and a base, absorbing heat from the environment.

Please note that the bathroom may become slippery due to the addition of oil.

Experiments at home, the result of which can be felt and touched, are very popular with children. These include this fun project that ends up with lots of thick, fluffy colored foam.

To carry it out you will need:

  • goggles for a child;
  • dry active yeast;
  • warm water;
  • hydrogen peroxide 6%;
  • dishwashing detergent or liquid soap (not antibacterial);
  • funnel;
  • plastic sequins (necessarily non-metallic);
  • food colorings;
  • bottle 0.5 l (it is best to take a bottle with a wide bottom, for greater stability, but a regular plastic one will do).

The experiment itself is extremely simple:

  1. 1 tsp dissolve dry yeast in 2 tbsp. l. warm water.
  2. In a bottle placed in a sink or dish with high sides, pour ½ cup of hydrogen peroxide, a drop of dye, glitter and some dishwashing liquid (several pumps on the dispenser).
  3. Insert a funnel and pour in the yeast. The reaction will start immediately, so act quickly.

The yeast acts as a catalyst and speeds up the release of hydrogen from the peroxide, and when the gas interacts with the soap, it creates a huge amount of foam. This is an exothermic reaction, with the release of heat, so if you touch the bottle after the "eruption" stops, it will be warm. Since the hydrogen immediately escapes, it's just soap suds to play with.

Did you know that lemon can be used as a battery? True, very weak. Experiments at home with citrus fruits will demonstrate to children the operation of a battery and a closed electrical circuit.

For the experiment you will need:

  • lemons - 4 pcs.;
  • galvanized nails - 4 pcs.;
  • small pieces of copper (you can take coins) - 4 pcs.;
  • alligator clips with short wires (about 20 cm) - 5 pcs.;
  • small light bulb or flashlight - 1 pc.

Here's how to do the experience:

  1. Roll on a hard surface, then lightly squeeze the lemons to release the juice inside the skins.
  2. Insert one galvanized nail and one piece of copper into each lemon. Line them up.
  3. Connect one end of the wire to a galvanized nail and the other end to a piece of copper in another lemon. Repeat this step until all fruits are connected.
  4. When you are done, you should be left with one 1 nail and 1 piece of copper that are not connected to anything. Prepare your light bulb, determine the polarity of the battery.
  5. Connect the remaining piece of copper (plus) and nail (minus) to the plus and minus of the flashlight. Thus, a chain of connected lemons is a battery.
  6. Turn on a light bulb that will work on the energy of fruits!

To repeat such experiments at home, potatoes, especially green ones, are also suitable.

How it works? The citric acid in the lemon reacts with two different metals, causing the ions to move in the same direction, creating an electrical current. All chemical sources of electricity work on this principle.

It is not necessary to stay indoors to conduct experiments for children at home. Some experiments will work better outdoors, and you won't have to clean anything up after they're done. These include interesting experiments at home with air bubbles, and not simple, but huge.

To make them you will need:

  • 2 wooden sticks 50-100 cm long (depending on the age and height of the child);
  • 2 metal screw-in ears;
  • 1 metal washer;
  • 3 m cotton cord;
  • bucket with water;
  • any detergent - for dishes, shampoo, liquid soap.

Here's how to conduct spectacular experiments for children at home:

  1. Screw metal ears into the ends of the sticks.
  2. Cut the cotton cord into two parts, 1 and 2 m long. You can not exactly adhere to these measurements, but it is important that the proportion between them is 1 to 2.
  3. Put a washer on a long piece of rope so that it sags evenly in the center, and tie both ropes to the ears on the sticks, forming a loop.
  4. Mix a small amount of detergent in a bucket of water.
  5. Gently dipping the loop on the sticks into the liquid, start blowing giant bubbles. To separate them from each other, carefully bring the ends of the two sticks together.

What is the scientific component of this experience? Explain to the children that bubbles are held together by surface tension, the attractive force that holds the molecules of any liquid together. Its action is manifested in the fact that spilled water collects in drops that tend to acquire a spherical shape, as the most compact of all that exists in nature, or that water, when poured, collects in cylindrical streams. At the bubble, a layer of liquid molecules is clamped on both sides by soap molecules, which increase its surface tension when distributed over the surface of the bubble, and prevent it from quickly evaporating. As long as the sticks are kept open, the water is held in the form of a cylinder; as soon as they are closed, it tends to a spherical shape.

Here are some experiments at home you can do with children.

7 easy experiments to show kids

There are very simple experiences that children remember for a lifetime. The guys may not fully understand why this is all happening, but when time passes and they find themselves in a lesson in physics or chemistry, a very clear example will surely pop up in their memory.

Bright Side collected 7 interesting experiments that children will remember. Everything you need for these experiments is at your fingertips.

It will take: 2 balls, candle, matches, water.

Experience: Inflate a balloon and hold it over a lighted candle to show the children that the balloon will burst from fire. Then pour plain tap water into the second ball, tie it up and bring it to the candle again. It turns out that with water the ball can easily withstand the flame of a candle.

Explanation: The water in the balloon absorbs the heat generated by the candle. Therefore, the ball itself will not burn and, therefore, will not burst.

You will need: plastic bag, pencils, water.

Experience: Pour water halfway into a plastic bag. We pierce the bag through with a pencil in the place where it is filled with water.

Explanation: If you pierce a plastic bag and then pour water into it, it will pour out through the holes. But if you first fill the bag halfway with water and then pierce it with a sharp object so that the object remains stuck in the bag, then almost no water will flow out through these holes. This is due to the fact that when polyethylene breaks, its molecules are attracted closer to each other. In our case, the polyethylene is pulled around the pencils.

You will need: balloon, wooden skewer and some dishwashing liquid.

Experience: Lubricate the top and bottom with the product and pierce the ball, starting from the bottom.

Explanation: The secret of this trick is simple. In order to save the ball, you need to pierce it at the points of least tension, and they are located at the bottom and at the top of the ball.

It will take: 4 cups of water, food coloring, cabbage leaves or white flowers.

Experience: Add food coloring of any color to each glass and put one leaf or flower into the water. Leave them overnight. In the morning you will see that they have turned into different colors.

Explanation: Plants absorb water and thus nourish their flowers and leaves. This is due to the capillary effect, in which the water itself tends to fill the thin tubes inside the plants. This is how flowers, grass, and large trees feed. By sucking in tinted water, they change their color.

It will take: 2 eggs, 2 glasses of water, salt.

Experience: Gently place the egg in a glass of plain clean water. As expected, it will sink to the bottom (if not, the egg may be rotten and should not be returned to the refrigerator). Pour warm water into the second glass and stir 4-5 tablespoons of salt in it. For the purity of the experiment, you can wait until the water cools down. Then dip the second egg into the water. It will float near the surface.

Explanation: It's all about density. The average density of an egg is much greater than that of plain water, so the egg sinks down. And the density of the saline solution is higher, and therefore the egg rises.

It will take: 2 cups water, 5 cups sugar, wooden sticks for mini skewers, thick paper, transparent glasses, saucepan, food coloring.

Experience: In a quarter cup of water, boil sugar syrup with a couple of tablespoons of sugar. Sprinkle some sugar on paper. Then you need to dip the stick in syrup and collect the sugar with it. Next, distribute them evenly on a stick.

Leave the sticks to dry overnight. In the morning, dissolve 5 cups of sugar in 2 cups of water on fire. You can leave the syrup to cool for 15 minutes, but it should not cool down much, otherwise the crystals will not grow. Then pour it into jars and add different food colors. Lower the prepared sticks into a jar of syrup so that they do not touch the walls and bottom of the jar, a clothespin will help with this.

Explanation: As the water cools, the solubility of sugar decreases, and it begins to precipitate and settle on the walls of the vessel and on your stick with a seed of sugar grains.

Experience: Light a match and hold it at a distance of 10-15 centimeters from the wall. Shine a flashlight on the match and you will see that only your hand and the match itself are reflected on the wall. It would seem obvious, but I never thought about it.

Explanation: Fire does not cast shadows, as it does not prevent light from passing through it.

Simple experiments

Do you love physics? Do you like to experiment? The world of physics is waiting for you!

What could be more interesting than experiments in physics? And of course, the simpler the better!

These exciting experiences will help you see the extraordinary phenomena of light and sound, electricity and magnetism. Everything you need for the experiments is easy to find at home, and the experiments themselves are simple and safe.

Eyes are burning, hands are itching!

Robert Wood is a genius for experimentation. look

- Up or down? Rotating chain. Salt Fingers. look

- Toy IO-IO. Salt pendulum. Paper dancers. Electric dance. look

- Ice Cream Mystery. Which water freezes faster? It's cold and the ice is melting! . look

- The snow creaks. What will happen to the icicles? Snow flowers. look

- Who quickly? Jet balloon. Air carousel. look

- Multi-colored balls. Sea dweller. Balancing egg. look

- Electric motor in 10 seconds. Gramophone. look

- Boil, cooling. look

— Faraday's experiment. Segner wheel. Nutcracker. look

Experiments with weightlessness. Weightless water. How to reduce your weight. look

- A jumping grasshopper. Jumping ring. Elastic coins. look

— A sunken thimble. Obedient ball. We measure friction. Funny monkey. Vortex rings. look

- Rolling and sliding. Friction of rest. Acrobat walks on a wheel. Brake in the egg. look

- Get a coin. Experiments with bricks. Wardrobe experience. Experience with matches. coin inertia. Hammer experience. Circus experience with a jar. Ball experience. look

- Experiments with checkers. Domino experience. Egg experience. Ball in a glass. Mysterious skating rink. look

— Experiments with coins. Water hammer. Outwit inertia. look

— Experience with boxes. Checkers experience. Coin experience. Catapult. Apple momentum. look

— Experiments with inertia of rotation. Ball experience. look

— Newton's first law. Newton's third law. Action and reaction. Law of conservation of momentum. The amount of movement. look

- Jet shower. Experiments with jet spinners: air spinner, jet balloon, ether spinner, Segner's wheel. look

- Balloon rocket. Multistage rocket. Impulse ship. Jet boat. look

- Centrifugal force. Easier on turns. Ring experience. look

- Gyroscopic toys. Clark's wolf. Greig's wolf. Flying top Lopatin. Gyro machine. look

— Gyroscopes and tops. Experiments with a gyroscope. Spinning Top Experience. Wheel experience. Coin experience. Riding a bike without hands. Boomerang experience. look

— Experiments with invisible axes. Experience with staples. Matchbox rotation. Slalom on paper. look

- Rotation changes shape. Cool or raw. Dancing egg. How to put a match. look

— When the water does not pour out. A little circus. Experience with a coin and a ball. When the water is poured out. Umbrella and separator. look

- Roly-ups. Mysterious matryoshka. look

- Center of gravity. Equilibrium. Center of gravity height and mechanical stability. Base area and balance. Obedient and naughty egg. look

- Human center of gravity. Fork balance. Funny swing. Diligent sawer. Sparrow on a branch. look

- Center of gravity. Pencil competition. Experience with unstable balance. Human balance. Stable pencil. Knife up. Cooking experience. Pot lid experience. look

— Plasticity of ice. A popped nut. Properties of a non-Newtonian fluid. Growing crystals. Properties of water and eggshell. look

— Expansion of a rigid body. Ground stoppers. Needle extension. Thermal scales. Separation of glasses. Rusty screw. Board to smithereens. Ball expansion. Coin expansion. look

— Expansion of gas and liquid. Air heating. Sounding coin. Water pipe and mushrooms. Water heating. Snow heating. Dry from water. The glass is creeping. look

— The Plato experience. Darling experience. Wetting and non-wetting. Floating razor. look

- Attraction of traffic jams. Adhesion to water. Miniature Plateau experience. Bubble. look

- Live fish. Experience with a paperclip. Experiments with detergents. Color streams. Rotating spiral. look

— Experience with a blotter. Experience with pipettes. Experience with matches. capillary pump. look

— Hydrogen soap bubbles. Scientific preparation. Bubble in a bank. Colored rings. Two in one. look

- Transformation of energy. Curved strip and ball. Tongs and sugar. Photoexposure meter and photoelectric effect. look

— Transfer of mechanical energy into thermal energy. Propeller experience. Bogatyr in a thimble. look

— Experience with an iron nail. Tree experience. Glass experience. Spoon experience. Coin experience. Thermal conductivity of porous bodies. Thermal conductivity of gas. look

- Which is colder. Heating without fire. Heat absorption. Radiation of heat. Evaporative cooling. Experience with an extinguished candle. Experiments with the outer part of the flame. look

— Transfer of energy by radiation. Experiments with solar energy. look

- Weight - heat regulator. Experience with stearin. Creating traction. Experience with weights. Spinner experience. Pinwheel on a pin. look

- Experiments with soap bubbles in the cold. Crystallization watch

— Frost on the thermometer. Evaporation on the iron. We regulate the boiling process. instant crystallization. growing crystals. We make ice. Ice cutting. Rain in the kitchen. look

— Water freezes water. Ice castings. We create a cloud. We make a cloud. We boil snow. Ice bait. How to get hot ice. look

- Growing crystals. Salt crystals. Golden crystals. Large and small. Peligo's experience. Experience is the focus. metal crystals. look

- Growing crystals. copper crystals. Fairy beads. Halite patterns. Home frost. look

- Paper bowl. Experience with dry ice. Sock experience. look

- Experiment on the Boyle-Mariotte law. Experiment on Charles' law. Let's check the Claiperon equation. Checking Gay-Lusac's law. Focus with a ball. Once again about the Boyle-Mariotte law. look

- Steam engine. Experience of Claude and Bouchereau. look

- Water turbine. Steam turbine. Wind turbine. Water wheel. Hydro turbine. Windmills toys. look

- Solid body pressure. Punching a coin with a needle. Ice cutting. look

— Fountains. The simplest fountain Three fountains. Fountain in a bottle. Fountain on the table. look

- Atmosphere pressure. Bottle experience. Egg in a decanter. Bank sticking. Glass experience. Canister experience. Experiments with a plunger. Bank flattening. Test tube experience. look

— A blotter vacuum pump. Air pressure. Instead of the Magdeburg hemispheres. Glass-diving bell. Carthusian diver. Punished curiosity. look

— Experiments with coins. Egg experience. Newspaper experience. School gum suction cup. How to empty a glass. look

— Experiments with glasses. The mysterious property of the radish. Bottle experience. look

— Naughty cork. What is pneumatics. Experience with a heated glass. How to raise a glass with the palm of your hand. look

- Cold boiling water. How much water weighs in a glass. Determine the volume of the lungs. Persistent funnel. How to pierce a balloon so that it does not burst. look

- Hygrometer. Hygroscope. Cone barometer. look

- Three balls. The simplest submarine. Experience with grapes. Does iron float? look

- Draft of the ship. Does the egg float? Cork in a bottle. Water candlestick. Sinking or floating. Especially for the drowning. Experience with matches. Amazing egg. Does the plate sink? The riddle of scales. look

- A float in a bottle. Obedient fish. A pipette in a bottle is a Carthusian diver. look

— Ocean level. Boat on the ground. Will the fish drown. Stick scales. look

— Law of Archimedes. Live toy fish. Bottle level. look

— Experience with a funnel. Water jet experience. Ball experience. Experience with weights. Rolling cylinders. stubborn leaves. look

- Folding sheet. Why doesn't he fall. Why does the candle go out. Why doesn't the candle go out? The blast of air is to blame. look

- Lever of the second kind. Polyspast. look

- Lever arm. Gate. Lever scales. look

- A pendulum and a bicycle. Pendulum and the globe. Fun duel. Unusual pendulum. look

- Torsional pendulum. Experiments with a swinging top. Rotating pendulum. look

- Experiment with the Foucault pendulum. Addition of vibrations. Experience with Lissajous figures. Pendulum resonance. Hippo and bird. look

- Fun swings. Vibrations and resonance. look

- Fluctuations. Forced vibrations. Resonance. Seize the moment. look

— Physics of musical instruments. String. Magic bow. Ratchet. Drinking glasses. Bottlephone. From bottle to organ. look

- Doppler effect. sound lens. Chladni's experiments. look

- Sound waves. Sound propagation. look

- Sounding glass. Straw flute. String sound. Sound reflection. look

- Phone from a matchbox. Telephone station. look

- Singing combs. Spoon call. Drinking glass. look

- Singing water. Scary wire. look

- Hear the beating of the heart. Ear glasses. Shock wave or cracker. look

- Sing with me. Resonance. Sound through bone. look

— Tuning fork. Storm in a glass. Louder sound. look

- My strings. Change the pitch. Ding Ding. Crystal clear. look

- We make the ball squeak. Kazu. Drinking bottles. Choral singing. look

- Intercom. Gong. Crowing glass. look

- Blow out the sound. Stringed instrument. Little hole. Blues on the bagpipe. look

- Sounds of nature. Drinking straw. Maestro, march. look

- A speck of sound. What's in the bag. Surface sound. Disobedience Day. look

- Sound waves. Visible sound. Sound helps to see. look

- Electrification. Electric coward. Electricity repels. Soap bubble dance. Electricity on combs. The needle is a lightning rod. Electrification of the thread. look

- Bouncing balls. Interaction of charges. Sticky ball. look

— Experience with a neon light bulb. Flying bird. Flying butterfly. Revived world. look

- Electric spoon. Saint Elmo's fire. Water electrification. Flying cotton. Soap bubble electrization. Loaded frying pan. look

— Electrification of the flower. Experiments on the electrification of man. Lightning on the table. look

— Electroscope. Electric theater. Electric cat. Electricity attracts. look

— Electroscope. Bubble. Fruit Battery. Gravity fight. Battery of galvanic elements. Connect coils. look

- Turn the arrow. Balancing on the edge. Repulsive nuts. Light up the world. look

- Amazing tapes. Radio signal. static separator. Jumping grains. Static rain. look

- Wrap film. Magic figurines. Influence of air humidity. Living doorknob. Sparkling clothes. look

— Charging at a distance. Rolling ring. Crack and clicks. Magic wand. look

Everything can be recharged. positive charge. The attraction of bodies static adhesive. Charged plastic. Ghost leg. look

Electrification. Tape experiments. We call lightning. Saint Elmo's fire. Heat and current. Draws an electric current. look

- Vacuum cleaner from combs. Dancing cereal. Electric wind. Electric octopus. look

— Current sources. First battery. Thermoelement. Chemical current source. look

We make a battery. Grenet element. Dry current source. From an old battery. Improved item. Last peep. look

- Experiments-tricks with a Thomson coil. look

- How to make a magnet. Experiments with needles. Experience with iron filings. magnetic pictures. Cutting magnetic lines of force. The disappearance of magnetism. Sticky wolf. Iron wolf. Magnetic pendulum. look

— Magnetic brigantine. Magnetic angler. magnetic infection. Picky goose. Magnetic shooting range. Woodpecker. look

- Magnetic compass. poker magnetization. Magnetization with a feather poker. look

— Magnets. Curie point. Iron wolf. steel barrier. Perpetuum mobile of two magnets. look

- Make a magnet. Demagnetize the magnet. Where does the compass needle point? Magnet extension. Get rid of danger. look

- Interaction. In a world of opposites. Poles against the middle of a magnet. Chain game. Anti-gravity discs. look

- See the magnetic field. Draw a magnetic field. Magnetic metals. Shake 'em up Magnetic field barrier. Flying cup. look

- Light beam. How to see the light. Rotation of the light beam. Multicolored lights. Sugar light. look

- Absolutely black body. look

- Slide projector. Shadow physics. look

- Magic ball. Pinhole camera. Upside down. look

How does a lens work. Water magnifier. We turn on the heating. look

— The Mystery of the Dark Stripes. More light. Color on glass. look

- Copier. Mirror magic. Appearance from nowhere. Experience-focus with a coin. look

— Reflection in a spoon. Wrapped curved mirror. Transparent mirror. look

- What angle. Remote control. Mirror room. look

- For jokes. reflected rays. Jumps of the world. Mirror letter. look

- Scratch the mirror. How others see you. Mirror to mirror. look

- Adding colors. Rotating white. Colored top. look

- The spread of light. Getting the spectrum. spectrum on the ceiling. look

— Arithmetic of colored rays. Focus with disk. Banham disc. look

- Mixing colors with the help of tops. Star experience. look

- Mirror. Reversed name. Multiple reflection. Mirror and TV. look

— Weightlessness in the mirror. We multiply. Direct mirror. False mirror. look

- Lenses. Cylindrical lens. Double layer lens. Divergent lens. Homemade spherical lens. When the lens stops working. look

- Droplet lens. Fire from an ice floe. Does a magnifying glass magnify. The image can be caught. In the footsteps of Leeuwenhoek. look

- The focal length of the lens. Mysterious test tube. Wayward arrow. look

— Experiments on the scattering of light. look

- Disappearing coin. Broken pencil. Living shadow. Experiments with light. look

— The shadow of the flame. The law of reflection of light. Mirror reflection. Reflection of parallel rays. Experiments on total internal reflection. The course of light rays in a light guide. Spoon experience. Light refraction. Refraction in a lens. look

— Interference. Slit experience. Experience with thin film. Diaphragm or turning of the needle. look

- Soap bubble interference. Interference in the lacquer film. Making rainbow paper look

- Obtaining the spectrum using an aquarium. Spectrum using a water prism. Anomalous dispersion. look

— Experience with a pin. Paper experience. Experiment on diffraction by a slit. Experiment on diffraction with a laser. look

Many people think that science is boring and dreary. So says the one who has not seen the science shows from "Eureka". What happens in our "lessons"? No cramming, boring formulas and a sour expression on the face of a desk mate. Children like our science, all experiments and experiments, they love our science, our science gives joy and stimulates further knowledge of complex subjects.

Try it yourself, to conduct entertaining experiments in physics for children at home. It will be fun, and most importantly, very informative. Your child will get acquainted with the laws of physics in a playful way, and it has been proven that in the game, children quickly and easily learn the material and remember for a long time.

Entertaining experiments in physics that should be shown to children at home

Simple entertaining experiments in physics that children will remember for a lifetime. Everything you need to conduct these experiments is at your fingertips. So, forward to scientific discoveries!

A ball that doesn't burn!

Props: 2 balloons, candle, matches, water.

Interesting experience: We inflate the first balloon and hold it over a candle to demonstrate to the kids that the balloon will burst from the fire.

Pour plain tap water into the second ball, tie it up and bring the candles to the fire again. And about a miracle! What do we see? The ball does not burst!

The water that is in the balloon absorbs the heat generated by the candle, and therefore the balloon does not burn, therefore, does not burst.

Wonder Pencils

Requisites: plastic bag, ordinary sharpened pencils, water.

Interesting experience: Pour water into a plastic bag - not full, half.

In the place where the bag is filled with water, we pierce the bag through with pencils. What do we see? In places of a puncture - the package does not leak. Why? And, if you do the opposite: first pierce the bag, and then pour water into it, the water will flow through the holes.

How the "miracle" happens: explanation: When polyethylene breaks, its molecules are attracted closer to each other. In our experiment, the polyethylene is pulled around the pencils and keeps the water from leaking.

Non-popping ball

Requisites: balloon, wooden skewer and dishwashing liquid.

Interesting experience: Lubricate the top and bottom of the ball with dishwashing liquid, pierce with a skewer, starting from the bottom.

How the "miracle" happens: explanation: And the secret of this “trick” is simple. To save a whole ball, you need to know where to pierce - at the points of least tension, which are located at the bottom and at the top of the ball.

"Cauliflower

Requisites: 4 ordinary glasses of water, bright food coloring, cabbage leaves or white flowers.

Interesting experience: We add food coloring of any color to each glass and put one leaf of cabbage or a flower in colored water. We leave the "bouquet" for the night. And in the morning... we will see that the cabbage leaves or flowers have become different colors.

How the "miracle" happens: explanation: Plants absorb water to nourish their flowers and leaves. This is due to the capillary effect, in which water itself fills the thin tubes inside the plants. By sucking in the tinted water, the leaves and color change their color.

The egg that can swim

Requisites: 2 eggs, 2 cups of water, salt.

Interesting experience: Carefully place the egg in a glass of plain clean water. We see: it drowned, sank to the bottom (if not, the egg is rotten and it is better to throw it away).
But in the second glass, pour warm water and stir 4-5 tablespoons of salt in it. We wait until the water has cooled, then lower the second egg into the salt water. And what do we see now? The egg floats on the surface and does not sink! Why?

How the "miracle" happens: explanation: It's all about density! The average density of an egg is much greater than the density of plain water, so the egg "sinks". And the density of the saline solution is greater, and therefore the egg “floats”.

Delicious Experiment: Crystal Candy

Requisites: 2 cups water, 5 cups sugar, wooden sticks for mini skewers, thick paper, transparent glasses, saucepan, food coloring.

Interesting experience: Take a quarter cup of water, add 2 tablespoons of sugar, boil the syrup. At the same time, pour a little sugar onto thick paper. Then dip a wooden skewer into the syrup and collect sugar with it.

Let the sticks dry overnight.

In the morning we dissolve 5 glasses of sugar in two glasses of water, leave the syrup to cool for 15 minutes, but not much, otherwise the crystals will not “grow”. Then pour the syrup into jars and add multi-colored food coloring. We lower the skewers with sugar into jars so that they do not touch either the walls or the bottom (you can use a clothespin). What's next? And then we observe the process of crystal growth, we are waiting for the result in order to ... eat!

How the “miracle” happens: explanation: As soon as the water begins to cool, the solubility of sugar decreases and it precipitates, settling on the walls of the vessel and on a skewer with a seed of sugar grains.

"Eureka"! Science without boredom!

There is another option to motivate children to study science - order a science show at the Evrika Development Center. Oh, what's not here!

Show program "Fun Kitchen"

Here, the kids are waiting for exciting experiments with those things and products that are available in any kitchen. The kids will try to drown the tangerine; make drawings on milk, check the egg for freshness, and also find out why milk is useful.

"Tricks"

This program contains experiments that at first glance seem like real magic tricks, but in fact they are all explained with the help of science. The kids will find out: why the balloon over the candle does not burst; what makes an egg float, why a balloon sticks to a wall... and other interesting experiments.

"Entertaining physics"

Does the air weigh, why does a fur coat warm, what is common between the experiment with a candle and the shape of the wing of birds and aircraft, can a piece of fabric hold water, can an eggshell of a whole elephant withstand these and other questions, the kids will receive an answer by becoming a participant in the show " Entertaining physics" from "Eureka".

These entertaining experiments in physics for schoolchildren can be carried out in the classroom to draw students' attention to the phenomenon being studied, while repeating and consolidating the educational material: they deepen and expand the knowledge of schoolchildren, contribute to the development of logical thinking, instill interest in the subject.

It Matters: Science Show Safety

  • The main part of the props and consumables is purchased directly from specialized stores of manufacturing companies in the United States, and therefore you can be sure of their quality and safety;
  • Evrika Child Development Center non-scientific shows of materials that are toxic or otherwise harmful to children's health, easily breakable objects, lighters and other “harmful and dangerous”;
  • Before ordering scientific shows, each client can find out a detailed description of the experiments being carried out, and, if necessary, sensible explanations;
  • Before the start of science shows, the children are instructed on the rules of conduct at the Show, and professional Hosts make sure that these rules are not violated during the show.

For many students, physics is a rather complex and incomprehensible subject. In order to interest the child in this science, parents use all sorts of tricks: they tell fantastic stories, show entertaining experiments, and cite the biographies of great scientists as an example.

How to conduct experiments in physics with children?

  • Teachers warn not to limit acquaintance with physical phenomena only by demonstrating entertaining experiments and experiments.
  • Experiments must necessarily be accompanied by detailed explanations.
  • To begin with, the child needs to be explained that physics is a science that studies the general laws of nature. Physics studies the structure of matter, its forms, its movements and changes. At one time, the famous British scientist Lord Kelvin quite boldly stated that in our world there is only one science - physics, everything else is the usual collection of stamps. And there is some truth in this statement, because the whole Universe, all planets and all worlds (supposed and existing) obey the laws of physics. Of course, the statements of the most eminent scientists about physics and its laws are unlikely to make a junior schoolchild throw away his mobile phone and enthusiastically delve into the study of a physics textbook.

Today we will try to bring to the attention of parents some entertaining experiences that will help to interest your children and answer many of their questions. And who knows, maybe thanks to these home experiments, physics will become your child's favorite subject. And very soon our country will have its own Isaac Newton.

Interesting experiments with water for children - 3 instructions

For 1 experiment you will need two eggs, regular table salt and 2 glasses of water.

One egg must be carefully lowered into a glass half filled with cold water. It will immediately sink to the bottom. Fill the second glass with warm water and stir in it 4-5 tbsp. l. salt. Wait until the water in the glass is cold, and carefully dip the second egg into it. It will remain on the surface. Why?

Explanation of the results of the experiment

The density of plain water is lower than that of an egg. That is why the egg sinks to the bottom. The average density of salt water is significantly higher than the density of the egg, so it remains on the surface. Having demonstrated this experience to a child, one can notice that sea water is an ideal environment for learning to swim. After all, the laws of physics and in the sea, no one canceled. The saltier the water in the sea, the less effort is required to stay afloat. The most salty is the Red Sea. Due to the high density, the human body is literally pushed to the surface of the water. Learning to swim in the Red Sea is pure pleasure.

For 2 experiments you will need: a glass bottle, a bowl of colored water and hot water.

Warm up the bottle with hot water. Pour hot water out of it and turn it upside down. Set in a bowl of tinted cold water. The liquid from the bowl will begin to flow into the bottle on its own. By the way, the level of tinted liquid in it will be (compared to the bowl) significantly higher.

How to explain the result of the experiment to the child?

The preheated bottle is filled with warm air. Gradually the bottle cools and the gas is compressed. The bottle is under pressure. The pressure of the atmosphere affects the water, and it enters the bottle. Its inflow will stop only when the pressure does not equalize.

For 3 experience you will need a plexiglass ruler or a regular plastic comb, woolen or silk fabric.

In the kitchen or bathroom, adjust the faucet so that a thin stream of water flows from it. Ask the child to strongly rub the ruler (comb) with a dry woolen cloth. Then the child should quickly bring the ruler closer to the stream of water. The effect will amaze him. The jet of water will bend and reach for the ruler. A funny effect can be obtained by using two rulers at the same time. Why?

An electrified dry comb or a Plexiglas ruler becomes a source of an electric field, which is why the jet is forced to bend in its direction.

You can learn more about all these phenomena in physics lessons. Any child will want to feel like a “master” of water, which means that the lesson will never be boring and uninteresting for him.

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How can you prove that light travels in a straight line?

To conduct the experiment, you will need 2 sheets of thick cardboard, a regular flashlight, 2 stands.

Experiment progress: In the center of each cardboard, carefully cut out round holes of the same diameter. We put them on stands. The holes must be at the same height. We place the switched on lantern on a pre-prepared stand made of books. You can use any box of the right size. We direct the flashlight beam into the hole in one of the cardboard boxes. The child stands on the opposite side and sees the light. We ask the child to move away, and we shift to the side any of the cardboard boxes. Their holes are no longer on the same level. We return the child to the same place, but he no longer sees the light. Why?

Explanation: Light can only travel in a straight line. If there is an obstacle in the path of light, it stops.

Experience - dancing shadows

For this experience you will need: a white screen, carved cardboard figures that need to be hung on threads in front of the screen, and ordinary candles. Candles should be placed behind the figures. No screen - you can use a regular wall

Experiment progress: Light the candles. If the candle is moved further away, then the shadow from the figure will become smaller; if the candle is moved to the right, the figure will move to the left. The more candles you light, the more interesting the dance of the figures will be. Candles can be lit in turn, raised higher, lower, creating very interesting dance compositions.

Interesting experience with shadow

For the next experiment, you will need a screen, a fairly powerful electric lamp and a candle. If you direct the light of a powerful electric lamp at a burning candle, then a shadow will appear on the white canvas not only from the candle, but also from its flame. Why? Everything is simple, it turns out that in the flame itself there are red-hot opaque particles.

Simple experiments with sound for younger students

Ice experiment

If you are lucky and you find a piece of dry ice at home, you can hear an unusual sound. He is quite unpleasant - very thin and howling. To do this, put dry ice in a regular teaspoon. True, the spoon will immediately stop sounding as soon as it cools. Why does this sound appear?

When ice comes into contact with a spoon (in accordance with the laws of physics), carbon dioxide is released, it is he who makes the spoon vibrate and make an unusual sound.

funny phone

Take two identical boxes. Poke a hole in the middle of the bottom and lid of each of the boxes with a thick needle. Place ordinary matches in boxes. Pull the cord (10-15 cm long) into the holes made. Each end of the lace must be tied in the middle of the match. It is advisable to use fishing line made of nylon or silk thread. Each of the two participants in the experiment takes his "tube" and moves away to the maximum distance. The line should be taut. One brings the phone to his ear and the other to his mouth. That's all! The phone is ready - you can make small talk!

Echo

Make a pipe out of cardboard. Its height should be about three hundred mm, and its diameter about sixty mm. Place a clock on a regular pillow and cover it on top with a pipe made in advance. In this case, you can hear the sound of the clock if your ear is directly above the pipe. In all other positions, the sound of the clock is not audible. However, if you take a piece of cardboard and place it at an angle of forty-five degrees to the axis of the pipe, then the sound of the clock will be perfectly audible.

How to experiment with magnets with your child at home - 3 ideas

Children simply adore playing with a magnet, so they are ready to join in any experiment with this object.

How to pull objects out of water with a magnet?

For the first experiment, you will need a lot of bolts, paper clips, springs, a plastic water bottle and a magnet.

The children are given the task: to pull objects out of the bottle without getting their hands wet, and of course the table. As a rule, children quickly find a solution to this problem. During the experience, parents can tell children about the physical properties of a magnet and explain that the force of a magnet works not only through plastic, but also through water, paper, glass, etc.

How to make a compass?

Take cold water in a saucer and put a small piece of a napkin on its surface. Carefully place a needle on a napkin, which we first rub against a magnet. The napkin gets wet and sinks to the bottom of the saucer, and the needle remains on the surface. Gradually, it smoothly turns one end to the north, the other to the south. The correctness of a homemade compass can be verified for real.

A magnetic field

First, draw a straight line on a piece of paper and place a regular iron paperclip on it. Slowly move the magnet towards the line. Mark the distance at which the paperclip will be attracted to the magnet. Take another magnet and do the same experiment. The paperclip will be attracted to the magnet from a farther distance or from a closer one. Everything will depend solely on the "strength" of the magnet. In this example, the child can be told about the properties of magnetic fields. Before telling the child about the physical properties of the magnet, it is necessary to explain that the magnet does not attract all the “brilliant things”. A magnet can only attract iron. Such pieces of iron as nickel and aluminum are too tough for him.

Interestingly, did you like physics lessons at school? Not? Then you have a great opportunity to master this very interesting subject together with your child. Find out how to spend interesting and simple at home, read in another article on our website.

Good luck with your experiments!

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There are very simple experiences that children remember for a lifetime. The guys may not fully understand why this is all happening, but when time passes and they find themselves in a lesson in physics or chemistry, a very clear example will surely pop up in their memory.

website collected 7 interesting experiments that children will remember. Everything you need for these experiments is at your fingertips.

refractory ball

It will take: 2 balls, candle, matches, water.

Experience: Inflate a balloon and hold it over a lighted candle to show the children that the balloon will burst from fire. Then pour plain tap water into the second ball, tie it up and bring it to the candle again. It turns out that with water the ball can easily withstand the flame of a candle.

Explanation: The water in the balloon absorbs the heat generated by the candle. Therefore, the ball itself will not burn and, therefore, will not burst.

The pencils

You will need: plastic bag, pencils, water.

Experience: Pour water halfway into a plastic bag. We pierce the bag through with a pencil in the place where it is filled with water.

Explanation: If you pierce a plastic bag and then pour water into it, it will pour out through the holes. But if you first fill the bag halfway with water and then pierce it with a sharp object so that the object remains stuck in the bag, then almost no water will flow out through these holes. This is due to the fact that when polyethylene breaks, its molecules are attracted closer to each other. In our case, the polyethylene is pulled around the pencils.

Non-popping ball

You will need: balloon, wooden skewer and some dishwashing liquid.

Experience: Lubricate the top and bottom with the product and pierce the ball, starting from the bottom.

Explanation: The secret of this trick is simple. In order to save the ball, you need to pierce it at the points of least tension, and they are located at the bottom and at the top of the ball.

Cauliflower

It will take: 4 cups of water, food coloring, cabbage leaves or white flowers.

Experience: Add food coloring of any color to each glass and put one leaf or flower into the water. Leave them overnight. In the morning you will see that they have turned into different colors.

Explanation: Plants absorb water and thus nourish their flowers and leaves. This is due to the capillary effect, in which the water itself tends to fill the thin tubes inside the plants. This is how flowers, grass, and large trees feed. By sucking in tinted water, they change their color.

floating egg

It will take: 2 eggs, 2 glasses of water, salt.

Experience: Gently place the egg in a glass of plain clean water. As expected, it will sink to the bottom (if not, the egg may be rotten and should not be returned to the refrigerator). Pour warm water into the second glass and stir 4-5 tablespoons of salt in it. For the purity of the experiment, you can wait until the water cools down. Then dip the second egg into the water. It will float near the surface.

Explanation: It's all about density. The average density of an egg is much greater than that of plain water, so the egg sinks down. And the density of the saline solution is higher, and therefore the egg rises.

crystal lollipops

It will take: 2 cups water, 5 cups sugar, wooden sticks for mini skewers, thick paper, transparent glasses, saucepan, food coloring.

Experience: In a quarter cup of water, boil sugar syrup with a couple of tablespoons of sugar. Sprinkle some sugar on paper. Then you need to dip the stick in syrup and collect the sugar with it. Next, distribute them evenly on a stick.

Leave the sticks to dry overnight. In the morning, dissolve 5 cups of sugar in 2 cups of water on fire. You can leave the syrup to cool for 15 minutes, but it should not cool down much, otherwise the crystals will not grow. Then pour it into jars and add different food colors. Lower the prepared sticks into a jar of syrup so that they do not touch the walls and bottom of the jar, a clothespin will help with this.

Explanation: As the water cools, the solubility of sugar decreases, and it begins to precipitate and settle on the walls of the vessel and on your stick with a seed of sugar grains.

lit match

Need: Matches, flashlight.

Experience: Light a match and hold it at a distance of 10-15 centimeters from the wall. Shine a flashlight on the match and you will see that only your hand and the match itself are reflected on the wall. It would seem obvious, but I never thought about it.

Explanation: Fire does not cast shadows, as it does not prevent light from passing through it.

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