From the book "My first experiences."

lung volume

For experience you need:

adult assistant;
large plastic bottle;
basin for washing;
water;
plastic hose;
beaker.

1. How much air can your lungs hold? You'll need adult help to figure this out. Fill the bowl and bottle with water. Have an adult hold the bottle upside down underwater.

2. Insert the plastic hose into the bottle.

3. Inhale deeply and blow into the hose as hard as you can. Air bubbles will appear in the bottle. Clamp the hose as soon as the air in the lungs runs out.

4. Pull out the hose and ask your assistant to close the neck of the bottle with the palm of your hand and turn it over to the correct position. In order to find out how much gas you exhaled, add water to the bottle with a measuring cup. See how much water you need to add.

make it rain

For experience you need:

adult assistant;
fridge;
Electric kettle;
water;
metal spoon;
saucer;
potholder for hot.

1. Put a metal spoon in the refrigerator for half an hour.

2. Ask an adult to help you complete the experiment from start to finish.

3. Boil a full kettle of water. Place a saucer under the spout of the teapot.

4. Using an oven mitt, carefully bring the spoon to the steam rising from the kettle spout. Getting on a cold spoon, the steam condenses and spills "rain" on the saucer.

Make a hygrometer

For experience you need:

2 identical thermometers;
cotton wool;
rubber bands;
an empty yogurt cup;
water;
a large cardboard box without a lid;
spoke.

1. Poke two holes in the wall of the box with a knitting needle at a distance of 10 cm from each other.

2. Wrap two thermometers with the same amount of cotton and secure with rubber bands.

3. Tie a rubber band around the top of each thermometer and thread the rubber bands through the holes at the top of the box. Insert a knitting needle through the rubber eyelets, as shown in the figure, so that the thermometers hang freely.

4. Place a glass of water under one thermometer so that the water wets the cotton wool (but not the thermometer).

5. Compare thermometer readings at different times of the day. The greater the temperature difference, the lower the humidity.

call the cloud

For experience you need:

transparent glass bottle;
hot water;
ice Cube;
dark blue or black paper.

1. Carefully fill the bottle with hot water.

2. After 3 minutes, pour out the water, leaving a little at the very bottom.

3. Place an ice cube on top of the open bottle neck.

4. Place a sheet of dark paper behind the bottle. Where the hot air rising from the bottom meets the cool air at the neck, a white cloud forms. The water vapor contained in the air condenses, forming a cloud of tiny water droplets.

Under pressure

For experience you need:

transparent plastic bottle;
large bowl or deep tray;
water;
coins;
a strip of paper;
pencil;
ruler;
adhesive tape.

1. Fill the bowl and bottle halfway with water.

2. Draw a scale on a strip of paper and stick it to the bottle with duct tape.

3. Put two or three small stacks of coins on the bottom of the bowl so that you can set the neck of the bottle on them. Thanks to this, the neck of the bottle will not rest against the bottom, and water will be able to freely flow out of the bottle and flow into it.

4. Plug the neck of the bottle with your thumb and carefully place the bottle upside down on the coins.

Your water barometer will allow you to observe changes in atmospheric pressure. As the pressure rises, the water level in the bottle will rise. When the pressure drops, the water level will drop.

Make an air barometer

For experience you need:

jar with a wide mouth;
balloon;
scissors;
rubber band;
drinking straw;
cardboard;
pen;
ruler;
adhesive tape.

1. Cut the balloon open and pull it tight over the jar. Secure with a rubber band.

2. Sharpen the end of the straw. Glue the other end to the stretched ball with adhesive tape.

3. Draw a scale on a cardboard card and place the cardboard at the end of the arrow. When atmospheric pressure rises, the air in the can is compressed. As it falls, the air expands. Accordingly, the arrow will move along the scale.

If the pressure rises, the weather will be fine. If it falls, it's bad.

What gases does air consist of?

For experience you need:

adult assistant;
glass jar;
candle;
water;
coins;
large glass bowl.

1. Have an adult light a candle and put paraffin wax on the bottom of the bowl to secure the candle.

2. Carefully fill the bowl with water.

3. Cover the candle with a jar. Place stacks of coins under the jar so that its edges are only slightly below the water level.

4. When all the oxygen in the jar has burned out, the candle will go out. The water will rise, taking up the volume where oxygen used to be. So you can see that there is about 1/5 (20%) oxygen in the air.

Make a battery

For experience you need:

durable paper towel;
food foil;
scissors;
copper coins;
salt;
water;
two insulated copper wires;
small light bulb.

1. Dissolve some salt in water.

2. Cut paper towel and foil into squares slightly larger than coins.

3. Wet paper squares in salt water.

4. Place a stack on top of each other: a copper coin, a piece of foil, a piece of paper, another coin, and so on several times. There should be paper on top of the stack, and a coin at the bottom.

5. Put the stripped end of one wire under the pile, attach the other end to the light bulb. Put one end of the second wire on top of the stack, and connect the other to the light bulb as well. What happened?

"solar" fan

For experience you need:

food foil;
black paint or marker;
scissors;
adhesive tape;
threads;
large clean glass jar with a lid.

1. Cut out two strips of foil about 2.5x10 cm each. Color one side with black marker or paint. Make slits in the strips and insert them one into the other, bending the ends, as shown in the figure.

2. Use string and duct tape to attach the solar panels to the lid of the jar. Put the jar in a sunny place. The black side of the strips heats up more than the shiny side. Due to the temperature difference, there will be a difference in air pressure, and the fan will start to rotate.

What color is the sky?

For experience you need:

glass cup;
water;
tea spoon;
flour;
white paper or cardboard;
flashlight.

1. Stir half a teaspoon of flour in a glass of water.

2. Put the glass on white paper and shine a flashlight on it from above. The water appears light blue or grey.

3. Now put the paper behind the glass and shine on it from the side. The water appears pale orange or yellowish.

The smallest particles in the air, like flour in water, change the color of light rays. When the light falls from the side (or when the sun is low on the horizon), the blue color is scattered, and the eyes see an excess of orange rays.

Make a mini microscope

For experience you need:

small mirror;
plasticine;
glass cup;
aluminium foil;
needle;
adhesive tape;
a drop of ox;
small flower

1. A microscope uses a glass lens to refract a beam of light. This role can be played by a drop of water. Set the mirror at an angle on a piece of plasticine and cover with a glass.

2. Fold the aluminum foil like an accordion to create a layered strip. Poke a small hole in the center with a needle.

3. Bend the foil over the glass as shown. Secure the edges with adhesive tape. With the tip of your finger or needle, drop water onto the hole.

4. Put a small flower or other small object on the bottom of the glass under the water lens. A homemade microscope can magnify it almost 50 times.

call the lightning

For experience you need:

metal baking sheet;
plasticine;
plastic bag;
metal fork.

1. Press a large piece of plasticine against the baking sheet so that you get a handle. Now don't touch the pan itself - just the handle.

2. Holding the baking sheet by the plasticine handle, three of it in a circular motion on the package. In this case, a static electric charge accumulates on the baking sheet. The baking sheet should not extend beyond the edges of the package.

3. Raise the baking sheet slightly above the bag (still holding the plasticine handle) and bring the prongs of the fork to one corner. A spark will jump from the pan to the fork. This is how lightning jumps from a cloud to a lightning rod.

Pour water into a glass, be sure to the very edge. Cover with a sheet of thick paper and gently holding it, very quickly turn the glass upside down. Just in case, do all this over the basin or in the bath. Now remove your palm ... Focus! still stays in the glass!

It's a matter of air pressure. The air pressure on the paper from the outside is greater than the pressure on it from the inside of the glass and, accordingly, does not allow the paper to release water from the container.

The experience of Rene Descartes or the pipette diver

This entertaining experience is about three hundred years old. It is attributed to the French scientist René Descartes.

You will need a plastic bottle with a cork, a pipette and water. Fill the bottle, leaving two to three millimeters to the edge of the neck. Take a pipette, draw some water into it and lower it into the neck of the bottle. It should be at or slightly above the level in the bottle with its upper rubber end. In this case, it is necessary to achieve that, from a slight push with a finger, the pipette sinks, and then slowly rises up by itself. Now close the cork and squeeze the sides of the bottle. The pipette will go to the bottom of the bottle. Release the pressure on the bottle and it will pop up again.

The fact is that we slightly compressed the air in the neck of the bottle and this pressure was transferred to the water. penetrated into the pipette - it became heavier (since water is heavier than air) and drowned. When the pressure was stopped, the compressed air inside the pipette removed the excess, our "diver" became lighter and surfaced. If at the beginning of the experiment the “diver” does not obey you, then you need to adjust the amount of water in the pipette. When the pipette is at the bottom of the bottle, it is easy to see how it enters the pipette with increased pressure on the walls of the bottle, and leaves it when the pressure is released.

Good afternoon, guests of the Evrika Scientific Research Institute website! Do you agree that knowledge supported by practice is much more effective than theory? Entertaining experiments in physics will not only perfectly entertain, but also arouse interest in science in the child, and will also remain in memory much longer than a textbook paragraph.

What experiences will teach children?

We bring to your attention 7 experiments with an explanation that will definitely raise the question in the baby “Why?” As a result, the child learns that:

• By mixing 3 primary colors: red, yellow and blue, you can get additional ones: green, orange and purple. Have you thought about colors? We offer you another, unusual way to make sure of this.
• Light reflects off a white surface and turns into heat when it hits a black object. What can this lead to? Let's figure it out.
• All objects are subject to gravity, that is, tend to a state of rest. In practice, this looks fantastic.
• Objects have a center of mass. So what? Let's learn how to take advantage of this.
• Magnet - an invisible but powerful force of certain metals that can give you the abilities of a magician.
• Static electricity can not only attract your hair, but also sort out small particles.

So, let's make our kids proficient!

1. Create a new color

This experiment will be useful for preschoolers and younger students. For the experiment we will need:

• flashlight;
• red, blue and yellow cellophane;
• ribbon;
• white wall.

We conduct an experiment near a white wall:

• We take a lantern, cover it first with red and then with yellow cellophane, after which we turn on the light. We look at the wall and see an orange reflection.
• Now we remove the yellow cellophane and put a blue bag on top of the red one. Our wall is lit up in purple.
• And if the lantern is covered with blue and then yellow cellophane, then we will see a green spot on the wall.
• This experiment can be continued with other colors.

2. Black and sunbeam: an explosive combination

For the experiment you will need:

• 1 transparent and 1 black balloon;
• magnifier;
• Sun light.

This experience will require skill, but you can handle it.

• First you need to inflate a transparent balloon. Hold it tight, but do not tie the end.
• Now, using the blunt end of the pencil, push the black balloon halfway inside the transparent one.
• Inflate a black balloon inside a transparent one until it takes up about half the volume.
• Tie off the tip of the black balloon and push it into the middle of the clear balloon.
• Inflate the transparent balloon a little more and tie off the end.
• Position the magnifying glass so that the sun's beam hits the black ball.
• After a few minutes, the black ball will burst inside the transparent one.

Tell your child that transparent materials allow sunlight to pass through, so we can see the street through the window. A black surface, on the contrary, absorbs light rays and turns them into heat. That is why it is recommended to wear light-colored clothes in the heat to avoid overheating. When the black ball heated up, it began to lose its elasticity and burst under the pressure of the internal air.

3. Lazy ball

The next experience is a real show, but you will need to practice for it. The school gives an explanation for this phenomenon in the 7th grade, but in practice this can be done even at preschool age. Prepare the following items:

• plastic cup;
• metal dish;
• cardboard sleeve from under the toilet paper;
• tennis ball;
• meter;
• broom.

How to conduct this experiment?

• So, set the cup on the edge of the table.
• Place a dish on the cup so that its edge on one side is above the floor.
• Place the base of the toilet paper roll in the center of the dish directly above the glass.
• Put the ball on top.
• Stand half a meter from the structure with a broom in your hand so that its rods are bent to your feet. Get on top of them.
• Now pull back the broom and release sharply.
• The handle will hit the dish, and it, together with the cardboard sleeve, will fly away to the side, and the ball will fall into the glass.

Why didn't he fly away with the rest of the items?

Because, according to the law of inertia, an object that is not affected by other forces tends to remain at rest. In our case, only the force of attraction to the Earth acted on the ball, which is why it fell down.

4. Raw or boiled?

Let's introduce the child to the center of mass. To do this, take:

cooled hard-boiled egg;

2 raw eggs;

Invite a group of children to tell a boiled egg from a raw one. In this case, eggs cannot be broken. Say that you can do it without fail.

1. Unroll both eggs on the table.
2. An egg that rotates faster and at a uniform speed is boiled.
3. In support of your words, break another egg into a bowl.
4. Take the second raw egg and a paper napkin.
5. Ask someone in the audience to make the egg stand on the blunt end. No one can do this except you, since only you know the secret.
6. Just shake the egg vigorously up and down for half a minute, then set it on a napkin without any problems.

Why do eggs behave differently?

They, like any other object, have a center of mass. That is, different parts of an object may not weigh the same, but there is a point that divides its mass into equal parts. In a boiled egg, due to a more uniform density, the center of mass remains in the same place during rotation, while in a raw egg, it shifts along with the yolk, which makes it difficult to move. In a raw egg that has been shaken, the yolk descends to the blunt end and the center of mass is in the same place, so it can be set.

5. "Golden" mean

Invite the children to find the middle of the stick without a ruler, but just by eye. Evaluate the result with a ruler and say that it is not entirely correct. Now do it yourself. A mop handle works best.

• Raise the stick up to waist level.
• Lay it on 2 index fingers, keeping them at a distance of 60 cm.
• Move your fingers closer together and make sure that the stick does not lose balance.
• When your fingers converge and the stick is parallel to the floor, you have reached the goal.
• Put the stick on the table, keeping your finger on the desired mark. Make sure with a ruler that you have exactly completed the task.

Tell the child that you have found not just the middle of the stick, but its center of mass. If the object is symmetrical, then it will coincide with its middle.

6 Weightlessness in a jar

Let's make the needles float in the air. To do this, take:

• 2 threads of 30 cm;
• 2 needles;
• transparent tape;
• liter jar and lid;
• ruler;
• small magnet.

How to conduct an experience?

• Thread the needles and tie the ends with two knots.
• Attach the knots with tape to the bottom of the jar, leaving about 2.5 cm to its edge.
• From the inside of the lid, glue the adhesive tape in the form of a loop, sticky side out.
• Place the lid on the table and glue a magnet to the hinge. Turn the jar over and screw on the lid. The needles will hang down and reach for the magnet.
• When you turn the jar upside down, the needles will still reach for the magnet. You may need to lengthen the threads if the magnet does not hold the needles upright.
• Now unscrew the lid and put it on the table. You are ready to conduct the experience in front of the audience. As soon as you tighten the lid, the needles from the bottom of the jar will rush up.

Tell your child that a magnet attracts iron, cobalt and nickel, so iron needles are affected by it.

7. "+" and "-": useful attraction

Your child has probably noticed how hair is magnetized to certain fabrics or a comb. And you told him that static electricity was to blame. Let's do an experiment from the same series and show what else the "friendship" of negative and positive charges can lead to. We will need:

• paper towel;
• 1 tsp salt and 1 tsp. pepper;
• the spoon;
• balloon;
• wool item.

Experiment steps:

• Place a paper towel on the floor and sprinkle the salt and pepper mixture on it.
• Ask your child: how now to separate salt from pepper?
• Rub the inflated ball on a woolen thing.
• Bring it to salt and pepper.
• The salt will stay in place and the pepper will stick to the ball.

The ball, after rubbing against the wool, acquires a negative charge, which attracts positive pepper ions to itself. Salt electrons are not as mobile, so they do not react to the approach of the ball.

Experiences at home are a valuable life experience

Admit it, you yourself were interested in watching what was happening, and even more so for the child. By doing amazing tricks with the simplest substances, you will teach your baby:

• trust you;
• see the amazing in everyday life;
• it is fascinating to learn the laws of the world around;
• develop diversified;
• study with interest and desire.

We once again remind you that developing a child is easy and does not require a lot of money and time. See you soon!

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. One of them is 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 ones, but huge ones.

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 extension. 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