1. Potential and Kinetic Energy

2. What is energy?! Capacity to do work Measured in joules (J)

3. Potential Energy Energy stored in an object – Dependent upon: Position – top of a hill vs bottom of a hill Shape - stretched rubber band, compressed spring Condition – old battery vs new battery Commonly used as fuel to “run” things Ex: batteries, gasoline/fuel, food, object at the top of a hill, acorn hanging on a tree, etc.

4. Types of PE Chemical (food, gasoline, other fuels) Nuclear (fission, fusion) Gravitational (one object above another) Stored mechanical (elastic PE)

5. Kinetic Energy Energy of an object due to its motion. – Dependent upon: Mass – bowling ball vs a marble Speed – car traveling at 75mph vs 25 mph Ex: person running, Frisbee flying, baseball moving through air, car traveling down road

6. Forms of KE Sound – travels in waves, must have something to travel through Radiant – travels in waves, doesn’t have to have a medium Electrical – when e- move (lightning, electricity)

7. Law of Conservation of Energy Energy can be neither created, not destroyed BUT can change from one form to another. (Amount of energy in a system remains constant!) KE can change to PE, or vice versa! Energy can be transferred as work and heat  thermodynamics