Useful Tips

10 interesting experiments for children


You will learn the most interesting facts about the Internet and WWW. We will tell you the difference between the Internet and the World Wide Web, who is the inventor of the WWW, and much more. Read interesting facts about the Internet and expand your horizons with useful knowledge.

Egg with salt

The egg will sink to the bottom if you place it in a glass of plain water, but what happens if you add it to the water salt? The result is very interesting and can show interesting density facts.

1. Fill half a glass with water.

2. Add a lot of salt to the glass (about 6 tablespoons).

4. Carefully lower the egg into the water and observe what is happening.

Salt water has a higher density than ordinary tap water. It is salt that raises an egg to the surface. And if you add fresh water to the existing salt water, the egg will gradually sink to the bottom.

Egg in a bottle

Did you know that a boiled whole egg can easily be put in a bottle?

  • Bottle with a smaller neck diameter
  • Hard boiled egg
  • Matches
  • Some paper
  • Vegetable oil.

1. Lubricate the neck of the bottle with vegetable oil.

2. Now set fire to the paper (you can just a few matches) and immediately throw in the bottle.

3. Put an egg on the neck.

When the fire goes out, the egg will be inside the bottle.

Fire provokes the heating of air in the bottle, which goes out. After the fire goes out, the air in the bottle will begin to cool and compress. Therefore, low pressure forms in the bottle, and external pressure pushes the egg into the bottle.

Ball experiment

This experience shows how rubber and orange peel interact with each other.

1. Inflate the balloon.

2. Peel the orange, but do not discard the orange peel (zest).

3. Squeeze the orange zest over the ball, after which it will burst.

Orange zest contains limonene. He is able to dissolve rubber, which happens with the ball.

Candle experiment

An interesting experiment showing burning candles in the distance.

  • Ordinary candle
  • Matches or lighter.

1. Light a candle.

2. After a few seconds, put it out.

3. Now bring the burning flame to the smoke coming from the candle. The candle will start to burn again.

Smoke rising up from an extinguished candle contains paraffin, which quickly ignites. The burning paraffin vapor reaches the wick, and the candle starts to burn again.

Vinegar Soda

A balloon that inflates itself is a very interesting sight.

  • Bottle
  • Glass of vinegar
  • 4 teaspoons of soda
  • Balloon.

1. Pour a glass of vinegar into the bottle.

2. Pour soda into a ball.

3. Put the ball on the neck of the bottle.

4. Slowly place the ball vertically, pouring soda into a bottle of vinegar.

5. We observe how the balloon is inflated.

If soda is added to vinegar, a process called quenching of soda occurs. During this process, carbon dioxide is released, which inflates our ball.

Invisible ink

Play with your child as a secret agent and create your invisible ink.

  • Half a lemon
  • Water
  • A spoon
  • Bowl
  • Cotton swab
  • White paper
  • Lamp.

1. Squeeze a little lemon juice in a bowl and add as much water.

2. Dip a cotton swab in the mixture and write something on white paper.

3. Wait for the juice to dry and become completely invisible.

4. When you are ready to read the secret message or show it to someone else, heat the paper by holding it close to a light bulb or fire.

Lemon juice is an organic substance that oxidizes and turns brown when heated. Diluted lemon juice in water makes it hard to notice on paper, and no one will know that there is lemon juice there until it warms up.

Other substances which work on the same principle:

What we need:

  • Clear glass jar with lid,
  • Water,
  • Dishwashing liquid,
  • Sequins
  • Dye,
  • Dad and his heroic strength!

How to make lava

Next, we’ll show you how to create home lava for children.

  • Sunflower oil
  • Juice or food coloring
  • Transparent vessel (can a glass)
  • Any effervescent tablets.

1. First, pour the juice into a glass so that it fills approximately 70% of the container.

2. The rest of the glass is filled with sunflower oil.

3. Now we wait until the juice is separated from the sunflower oil.

4. Throw a pill into a glass and observe an effect similar to lava. When the tablet dissolves, you can throw another one.

Oil is separated from water, as it has a lower density. Dissolving in the juice, the tablet releases carbon dioxide, which captures parts of the juice and raises it up. Gas leaves completely from the glass when it reaches the top, while particles of juice fall back down.

The tablet hisses due to the fact that it contains citric acid and soda (sodium bicarbonate). Both of these ingredients react with water to form sodium citrate and gaseous carbon dioxide.

How to make a tornado?

Fill the jar with 3/4 water, add a few drops of dishwashing liquid. Then add dye and sparkles. This will help you better see the tornado. Close the container, unwind in a spiral and enjoy.

How it works?

When you scroll the can in a circular motion, you create a whirlwind of water that looks like a mini tornado. Water quickly rotates around the center of the vortex due to centrifugal force.

Centrifugal force Is the force inside the guiding object or fluid, such as water, with respect to the center of its circular path.

The Tornado in the Bottle Experience

    October 20, 2014 Tags: tornado, bottle, water

After spending this experience with water, you will learn how to make a tornado in a bottle. Items that you will need to complete the experiment, you can easily find at home. Follow our instructions and enjoy the cool swirl of water!

For the experiment you will need:

  • Water
  • Clear plastic bottle with cap
  • Shine
  • Dishwashing liquid

Experiment Time:

About 15 minutes

We start the experiment:

  1. Fill a plastic bottle with water until it fills ¾ of the bottle.
  2. Add a few drops of dishwashing liquid to the water.
  3. After a few seconds, add a few pinches of glitter. This will help you better see the tornado.
  4. Close the bottle tightly.
  5. Turn the bottle upside down and hold it by the neck. Quickly, in a few seconds, spin the bottle in a circular motion, stop and look inside.


You may need to spin the bottle several times before you make the tornado work properly.

How did this happen?

When you scroll the bottle in a circular motion, you create a whirlwind of water that looks like a mini tornado. Water quickly rotates around the center of the vortex due to centrifugal force. Centrifugal force is the force inside a guiding object or fluid, such as water, in relation to the center of its circular path. Vortices are found in nature, but there they are very scary.

Comments (14)

There is an application on the android, called "experiments at home." Each step of the experiment has a picture for clarity and is more convenient when everything is on the phone.

I’ll tell you something. Although you believe at least not) This is really NOT SCAM! This is a super thing! READ TO THE END. And most importantly, immediately turn on the brain, think and count. ))) I stumbled upon this quite by accident when I was looking for work to earn money. Prior to this, I did not even read such articles to the end. The article said that "YOU CAN MAKE HUNDREDS OF THOUSAND RUBLES FOR A COUPLE OF WEEKS WHEN YOU TAKE IN TOTAL 140 RUB." Prior to this, I did not even read such articles to the end. The article said that you need to send 20 rubles to 7 Internet-wallets and these wallets were listed. Then you need to delete the first wallet from the list, thereby shifting the list one line up. As a result, the seventh line is freed up, where you enter the number of your Internet-wallet. Then you drop this message, but with YOUR DATA on the seventh line, to 200 different forums. I thought and thought that, in principle, I LOSE NOTHING except 140 rubles. What is 140 rubles. Never mind. Especially with our prices. A couple of jars of baby puree, for example, we have enough for a couple of times to eat. In general, the amount is small, and the risk is a noble cause. And I decided to give it a try. Within 2 days I registered in more than 100 business forums and free message boards. A week has passed, I look into my Internet wallet. There are no receipts. At all. And different participants write that over a week some earned 800 rubles each, and 460 rubles each. Well, I thought, I got into another scam, wanting to EARN tens of thousands of rubles in a couple of weeks. Well, I quit this lesson without sending my announcement to 200 forums. A week later (for the sake of curiosity) I looked into my Internet wallet. I look, just one receipt - 20 rubles. Yes, I think it’s not worth it; by chance I was found to be as naive as I was. Two weeks later, I still opened my Internet wallet again, and it already has about 900 rubles. Where from? An incomprehensible picture, but still for 1 month 900 rubles. This is very little, as previous participants write - they earned tens of thousands of rubles in 1 month. And now, after 1 month the most interesting thing began: EVERY DAY began to come into my wallet, then, after another 2 weeks, there were already more than 48,000 rubles in my account. After that, I sent my ads to about 150 more forums. THE RESULT OF ME STUNKED. After only 2 months, I received 141,000 rubles. And the money went every day. Every 10 minutes, 20-40 rubles have been credited to my account and are being received now, since I consistently post this message on 10 forums per day (this is about 45 minutes of my time per day). And all this came to me for a risk of 140 rubles. Not bad, right?) I was in a very bad economic situation and for a long time I could not find a suitable job before I came across this article. I didn’t really believe that this worked, but I took the risk and began to receive translations from all over the world ... I understood one thing: there will always be people who will convince themselves and others that this is just a divorce for suckers. But in fact, the reason is in themselves - they simply cannot (or do not want) post this message on 200 forums. And they will convince everyone of the worldwide conspiracy, but not of their own laziness. I want to tell you how it works and why it works. I give you my word of honor that if you EXACTLY follow the instructions below, you will begin to receive MUCH MORE MONEY than you thought, spending only a small amount and several hours of free time. Agree, it is very simple. THIS IS TOTALLY LEGAL. AND YOUR DEPOSIT IS ONLY 140 RUBLES. Most importantly, THIS WORKS, AND WITH THIS, YOU DO NOT RISK ANYTHING. Read this several times if you need it. And then, follow the instructions EXACTLY how they are written and in the next 2 months you will get rich for a very decent amount of money. Here, in fact, the instruction itself: 1. Register in the Yandex Money Money Yandex system). This is a kind of electronic wallet for using money on the Internet. Check out this system, how it works. Next, you need to put in your account 141 rubles. (more than a ruble than required, because when transferring, the system removes 0.5% of the transferred amount, that is, you will have to transfer 20 rubles 10 kopecks, in the amount of 140 rubles 70 kopecks) I note from myself, that you can replenish the electronic wallet in special payment acceptance machines, which are often located in shops and metro stations. In the salons of communication "Euroset", "Messenger", etc. The best option is, of course, to attach any of your bank card (you can credit) to your account in Yandex Money. As soon as you put 140 rubles on your wallet 70 cop., - everything is ready, you can proceed to the next step! 2. It is necessary to transfer 20 rubles each. 10 kopecks (10 kopecks is charged by the transfer service for the transaction) to 7 Yandex money accounts offered below. In order to make a transfer, you need to go to the Yandex website for money. Then, if you have not logged in with your name, click on the “Login ...” link, which is located at the very top of the page and is highlighted in red. Next, you will be prompted to enter the username and password that you received during registration. Then we find the "Translate" link. Here, just you will need to transfer 20 rubles, 10 kopecks to 7 specified wallets from your Yandex wallet. Important! The transfer must be made to the account, not to e-mail !! Important! Each time you send, indicate in the field “Payment Name” the following phrase: “Please add me to the list of Yandex-wallets”. To receive income, you must send 20 rubles to each of these 7 wallets. 10 kopecks., Otherwise you simply will not be included in the system by network moderators of Yandex-wallets and you will not be able to cash out the income. (20 rubles. 10 kopecks. - This is the amount you send, while the recipient receives exactly 20 rubles.) So, send 20 rubles. 10 kopecks to each of the following accounts: (1) -410013942335245 (2) -410014494860311 (3) -410014495226723 (4) -410013319390842 (5) -410013847732954 (6) -410014484429074 (7) -410014512579454, to send a retransmission EACH of these 7 wallets for 20 rubles. 10 kopecks - otherwise, network moderators of Yandex-wallets, you simply will not be included in the system and you will not be able to cash out the income. 3. Now ATTENTION. After you have completed STEP 2, copy all this text to your computer from start to finish. In the copied article, remove the FIRST (UPPER) wallet from the list of wallets and move the 2nd wallet to the place of the 1st that you erased, the 3rd to the 2nd, 4th to the 3rd, 5th the second - to the place of the 4th, the 6th - to the place of the 5th and 7th - to the place of the 6th! And the most important thing in the 7th number, which turned out to be empty, WRITE THE NUMBER OF YOUR WALLET. Place this article (or an ad with a link to a page that you can easily make on one of the free sites) - on, AT LEAST 200-300 FORUMS (for any period of time, at least for a month, at least for half a year, even for a couple days) and NEWS TAPES. REMEMBER! THE MORE YOU PLACE ANNOUNCEMENTS, THERE WILL BE YOUR INCOME ABOVE. And this income will DIRECTLY DEPEND ON YOU. Placing this article in 200 forums, even at the least visited, GUARANTEES you a very good income. during two months. MORE ACCOMMODATIONS - MORE INCOME (moreover, in GEOMETRIC PROGRESSION). SO, WHEN YOU REACH THE FIRST POSITION IN THE LIST, YOU WILL HAVE THOUSAND RUBLES JUST AS A CREATOR OF THE LIST. I think THIS costs 140 rubles and TOTALLY NOT DIFFICULT WORK. And now, with the help of SIMPLE MATHEMATICS, I will explain to you why, in any case, you do not lose anything, but ONLY WIN. Say, out of 200 placements, you get only 5 answers (a very low number). So, you will make 100 rubles, being at 7 positions in the list. Now these 5 people are again doing MINIMUM 200 placements with your wallet in 6 positions, and only 5 people answer those first 5 - this is 500 rubles. Then these 25 people make 200 placements with your wallet on line 5 and only 5 answer - your income is 2,500 rubles. Now these 125 people, having placed and received only 5 answers each, give you 12 500 rubles of profit (you are in 4 positions). Further, these 625 people make at least 200 placements with you already on the 3rd line and only 5 people answer - this is 62,500 rubles. The most interesting thing is that these 3,125 people will make another 200 placements, and if only 5 people answer them, your income will be 312,500 rubles (you are in 2 positions). Now ATTENTION, these 15 625 people will make another 200 placements, and if only 5 people answer them, this is 1,562,500 rubles. Isn't that an impressive figure? Just think about it !! So YOU ​​CAN EARN your first million !! And this is all for the initial contribution of 140 rubles. You can imagine that thousands of people from all over the world join the Internet and read these articles every day. Just like you are reading this now. So that!? Will you spend 140 rubles? And if they are answered not by 5 people, but by 10? twenty? Imagine how exponentially your income will grow. You have absolutely nothing to lose. And you can buy a lot. Just turn on your brains. Good luck

Experiment with ice

At first glance, you might think that the ice cube, being on top, eventually melts, due to which it should make the water spill, but is it really so?

1. Fill a glass with warm water to the very edge.

2. Gently lower the ice cubes.

3. Observe the water level carefully.

As the ice melts, the water level does not change at all.

When water freezes, turning into ice, it expands, increasing its volume (which is why even heating pipes can burst in winter). Water from melted ice takes up less space than the ice itself. Therefore, when the ice cube melts, the water level remains approximately the same.

How to make a parachute

find out about air resistance, making a small parachute.

  • Plastic bag or other lightweight material
  • Scissors
  • A thread
  • A small load (possibly some kind of figure).

1. Cut a large square out of a plastic bag.

2. Now cut the edges so that we get an octagon (eight identical sides).

3. Now we tie 8 pieces of thread to each corner.

4. Remember to make a small hole in the middle of the parachute.

5. Tie the other ends of the threads to a small load.

6. We use a chair or find a high point to launch a parachute and check how it flies. Remember that the parachute should fly as slowly as possible.

Когда выпускается парашют, груз тянет его вниз, но при помощи строп парашют занимает большую площадь, которая сопротивляется воздуху, за счет чего груз медленно опускается. Чем больше площадь поверхности парашюта, тем больше сопротивляется эта поверхность падению, и тем медленнее будет опускаться парашют.

A small hole in the middle of the parachute allows air to slowly pass through it, rather than blocking the parachute on one side.

How to make a tornado

Find out, how to make a tornado in a bottle with this fun science experiment for kids. The objects used in the experiment are easy to find in everyday life. Home made mini tornado much safer than a tornado that is shown on television in the steppes of America.

  • Two plastic bottles with caps
  • Glue (adhesive plastic)
  • Water
  • Knife
  • Scotch.

1. Fill a plastic bottle with water, but not completely.

2. Carefully make holes in the covers with a knife.

3. Now glue the covers to each other from the side of the holes.

4. We fasten both bottles to the caps.

Turn the bottle filled with water up. We unwind the water bottle in a circular motion and observe an interesting tornado phenomenon.

Circular rotation of the bottle creates a whirlwind of water that looks like a tornado. Water quickly rotates around the center of the vortex due to centrifugal force. It should be noted that vortices in nature are in the form of tornadoes and hurricanes.

Molecular Propagation

Using this experiment, we will clearly observe the fact that hot water molecules really move faster than cold.

  • Glass of hot water
  • Glass of cold water
  • Any dye (e.g. potassium permanganate)
  • Pipette.

1. We fill the glasses equally. We drip the dye with a pipette at the same time in a glass with hot and cold water.

2. See what happens.

Hot water dyes faster than cold.

Food coloring is faster in hot water than in cold water. This is called diffusion. This experience also confirms the existence of the so-called Brownian motion.