1. By: Emi Diesman Kathy Hanks

2. Kinetic Energy: The kinetic energy of an object is the energy which it possesses due to its motion. Potential Energy: stored energy, the ability of an object to do work due to its position or internal structure. Gravitational Energy: Potential energy that is stored in the gravitational field due to gravity.

3. What will happen to the two different temperature spheres when dropped at same height? Hypothesis: If you drop one ball at room temperature and one that is warmer, the one with higher temperature will bounce higher.

4. Trial 1Trial 2Trial 3Average Room Temperature 0 in. Hot Water Temperature 13 in.11 in.15 in.13 in. Superball30 in.28 in.27 in.28.3 in. Conclusion: The warm ball which contained more thermal energy conserved more energy at the collision with the ground, resulting in a higher bounce. What was the transformation of energy during the demo?

5. Happy and Sad Spheres: Kinetic energy and motion of dropping the ball that contains potential and gravitational energy collision turns the energy of the drop into sound and thermal energy. With heat: Ball absorbed thermal energy, which means it cannot absorb as much thermal energy during collision. Our hypothesis that the more heated spheres would bounce more was correct.

6. Toy Vehicle: Compression of hand on toy mechanical energy motion friction Spring contains stored mechanical energy. Yo-yo : Kinetic Energy and motion when let go as it spins down, energy converts to gravitational potential energy which causes it to go back up Balloon: Inflation of air gives pressure – stored mechanical energy releasing balloon – motion contraction of balloon as air is lost sounds energy from release of pressure

7. Swing: Gravitational potential energy alike to a yoyo. Sled riding: Potential and kinetic energy down the hill, friction causes stopping. Strandbeests: Kinetic energy given by wind to power the motor for mechanical energy.