Description: Energy can trade forms back and forth, like when a pendulum swings. 
Key Terms: Chemical energy, kinetic energy, potential energy, pendulum, sound, heat, jewel, momentum

Description: Frictional force turns kinetic energy into thermal energy.
Key Terms: Frictional force, kinetic energy, heat, thermal energy, chemical energy

Description: Demonstration of changing energy types in an “energy theater.”
Key Terms: Kinetic energy, air, thermal energy, chemical energy