1. Conservation of Energy

2. Energy Changes Form Example:
A toaster (electrical energy  thermal energy)
Think – Pair – Share: With your partner think of 3 examples where energy is changed from one form to another

3. Describe the Transformation of Energy of each Example:

4. Where have you seen Conversions between Kinetic and Potential Energy?
Review:
What are the three types of Potential Energy?

5. Mechanical Energy
The total amount of kinetic and potential energy in a system
Due to an object’s:
Position
Motion
Mechanical Energy = KE + PE
The ME of a system Stays Constant

6. Mechanical Energy
Describe the energy of the apple at points A, B and C. A B C

7. Which apples have more ME?B A

8. Mechanical Energy Total KE can never be MORE than total PE in a system
Unless energy is added

9. Friction Again!? Friction causes:
kinetic energy to change into thermal energy
The ME of a system to decrease

11. The Law Of Conservation of Energy
cannot be created or destroyed
can only be changed from one form to another

12. Energy in the Body Calorie
Unit used to measure how much energy you get from food
1 Calorie = 4,184 Joules

13. The Energy Song
Video

14. Mechanical Energy B A C