Make a catapult
Met een paar eenvoudige materialen kun je thuis je eigen katapult maken. Ga aan de slag en ontdek hoe je propjes kunt lanceren.
7 ice-lolly sticks
4 rubber bands
A small spoon
Sticky tape
A pair of kitchen scissors
Scrunched balls of paper, or other small objects
Get started
What did you discover?
When you pull the top stick back, the ice-lolly stick bends a little. This causes energy to build up in the stick. When you release the stick, that energy is released all at once and it launches the ball of paper. Larger catapults work in exactly the same way.
Tip: Try changing the design of your catapult. Make the stack of sticks thinner or thicker, tighten or loosen the rubber bands, or launch objects of different weights. What happens when you make these changes?