10 Easy Science Fair Projects for Kids | Parenting
Science Fair Projects for Kids - NEED
If your child needs to learn about how substances being absorbed into other substances will change the original substance, the Bouncy Egg experiment is one of the most fun:
Step 1: Cook a raw egg until you are certain that it is thoroughly boiled, and drain the water and let it cool.
Step 2: Place the egg into a glass jar, and fill the jar with vinegar before tightly screwing the lid on the jar.
Step 3: Let the egg sit in the vinegar for no less than a week.
Step 4: After a week, drain the vinegar, rinse the egg with water, and dry the egg before bouncing it gently on the ground.
How does this fun example of science fair project for kids work?
The vinegar is a strong acid that causes the egg shell around the egg to be dissolved, and it is absorbed into the egg itself to make it a bouncy thing.
You can bounce the egg from a short height without breaking it, but do it gently to make the egg last as long as possible.
Science Fair Projects for Kids - Science Fair Project Ideas
If your child has to study on the effects of gravity, why not try the Spinning Ball experiment as the science fair project of choice?
Step 1: Set a ball on the table, and place a jar that is larger than the ball over it.
Step 2: Spin the jar in a circular motion, and see how the ball spins upwards towards the bottom of the jar.
Step 3: As the ball spins, lift the jar from the table. See how the ball stays in the jar until it has slowed down and falls.
The quick theory behind this one of science fair projects for kids:
The reason this works is that the gravitational force on the spinning ball is pulling it towards the sides of the jar, and the force is stronger than the one pulling it down.
Only once the force pulling it outwards is weaker than the forces pulling it downwards will the ball fall out of the jar.