Check our easy science experiments to do at home with you kids for the coming school holiday.
Use eggs to learn about momentum and changing direction!
What You’ll Need:
- 1 hard-boiled egg
- 1 fresh egg (the fresher, the better!)
Spin each type of egg (hard-boiled and fresh) on a table. Leave it to spin for just a few seconds, then momentarily stop it by placing your finger on top. Release your finger from the egg and observe what happens next!
What’s the science here?
The fresh egg will start to spin again when your finger is released, while the other egg will remain at a dead stop. The fresh egg has fluid and yolk inside it which gains momentum. When the egg is momentarily stopped, the yolk continues to turn inside the shell. When it is released, the viscosity of the fluid between the still spinning yolk and the shell causes the shell to spin again.