1. Energy!

2. Energy Definition: Energy is all around us! Energy measured in Joules
Physics: Energy is the ability to do work.
Work in physics means moving something.
So energy is what allows motion to change.
Energy is all around us!
Energy measured in Joules
Two main categories:
Kinetic energy
Potential energy

3. Kinetic energy KE Energy of motion KE = ½ mv2
Any motion has kinetic energy
Examples:
Sound wave
Light wave
Rolling car

4. Potential Energy PE Stored energy due to position Many kinds:
Elastic potential energy
Chemical potential energy
Gravitational potential energy
Equation for GPE:
GPE=mgh

5. Conversions Energy can be converted from one form to another
No energy is lost!