4 Science Experiments for Children
Science is something that children can really love if it"s presented to them in the right way. For example, science experiments offer them the opportunity to understand the world around them and it can be fun to observe certain findings.
That’s why we want to suggest a series of science experiments to help children learn in an easy way.
Let’s do some science experiments!
An egg that becomes stone
With this experiment, you"ll see how an egg can become unbreakable with only the help of vinegar. You’re going to need:
- An egg
- A glass jar with a lid
- White vinegar
Put the egg in the jar, fill the jar with 2/3 of vinegar, and cover the jar. Then, let it sit for 48 hours and then take out the egg. It will have an orange tint and you"ll see that it can’t be broken.
Why? This happens because the eggshell is composed of calcium carbonate. Since it’s soluble in vinegar, it has created a hard, resistant layer in its place.
Walk over eggs
As you can see, you can do various experiments with eggs. Ask your children what would happen if they walked over a bed of eggs. Surely, they’ll think that the eggs will crack, but you are going to demonstrate that that’s not the case.
Let’s get down to work! You’ll need to put the eggs in a box, with all of them in the same position. First, check beforehand to make sure that none of the eggs have cracks.
Then, help your child step over the eggs, making sure that he uniformly distributes his weight—this is the most important step. When he is securely over the eggs, let him go.
The eggs don’t break because its form is very similar to that of a 3-D arch, one of the architectural forms that resists uniform pressure.
Battery from a lemon
You can conduct this experiment using only a lemon, a screw, and a copper coin. Make two cuts in the lemon. Then, put the screw in one of the cuts and the copper coin in the other cut.
If you have a multimeter, you can measure the electric current that’s generating and can use several lemons to turn on an electronic device.
This occurs because the screw transfers electrons to the copper coin and generates a small electric current.
A homemade thermometer
To make an atmospheric thermometer, you"re going to need some materials that you may have at home:
- An empty 50 ml bottle
- A clear drinking straw
- Water (to fill the bottle)
- A bowl of hot water
- Food coloring
- Alcohol and ice to calibrate
- Make a hole in the bottle cap using scissors and put the straw through it.
- To seal it well, cover it with clay so that it doesn’t leak.
- Fill the bottle halfway with water.
- Add drops of homemade coloring, so that it rises clearer when the water rises through the straw.
- Close the bottle and make sure that the straw is in the area where the water starts.
- Now heat the bowl of water and put the bottle in it. This causes the molecules to stir up quickly and pushes the liquid through the straw to the top.
- Look at how the hot water rises through the straw!
Depending on the age of your children, you can raise the calibration complexity of the thermometer. In order to do that, add alcohol to the mix.
You need to indicate where 90°C is, which is why you"re going to raise the water to its boiling point and then submerge the bottle for 5 minutes. Mark the point where the water rises and when it"s at 90°C.
Do the same thing to indicate where 0°C is located and submerge the bottle in a bowl of water and ice for another 5 minutes. That way you"ve located both 0°C and 90°C and can calculate (by eye) the intermediate temperatures.