Objective:
-To show conversion of kinetic to thermal energy
Apparatus:
- Large steel ball bearings
- sheet of paper
- aluminum foil
Method:
-While holding the piece of paper, ask a student to smash the two ball bearings together, with the paper in the middle. A hole will burn in the paper, which you can see visually and you can smell. Repeat with aluminum foil in between the ball bearings. You can see ripples created by the pressure wave.