Driving Questions:
Why do both of the cars finish at the same time, even though their tracks are different? Why does the water stay in the cup when the cart goes in the loop-the-loop?
Principles:
This project demonstrates the scientific principle of conservation of energy. All of the potential energy the roller coaster has at the top of the hill is the close to the same (because of friction) amount of potential energy at the end of the track at the same or close to the same height. The water and the cup remain on the cart because of inertia.
You can look at my brochure at this link here.