1. Energy
Chapter 4

2. The Nature of Energy Any kind of change required energy
Light heating up
Breathing
Writing
Air movement

3. Energy List examples of energy in motion Two ways to transfer energy
Waves
particles

4. The ability to cause a change Many forms
Radiant
Electrical
Chemical
Thermal
nuclear

5. Analogy
Definition
Examples with energy

6. Basic Unit Joule, J Named after James Prescott Joule
Did experiments to explain heat

7. Kinetic Energy
Energy of motion
Depends on two factors
mass
velocity

8. Equation
Kinetic energy = ½ mass x velocity squared
KE = ½ mv2

9. Potential Energy Stored energy or energy of position Elastic Potential
Chemical Potential Energy
Gravitational Potential Energy

10. Gravitational Potential Energy
Depends upon three variables
mass
gravity
height

11. Equation
Potential energy = mass x gravity x height
PE = mgh