1. Potential and Kinetic Energy

2. Energy
Big Question: How does energy transfer through various systems in the natural world?
Learning Targets
Describe and identify examples of potential and kinetic energy
Describe the relationship between potential and kinetic energy

3. What is Energy?
BrainStorm

4. Energy Is …
the ability to cause change

5. How is all energy divided?
Potential
Energy
Kinetic
Energy
Gravitation
Potential
Energy
Elastic
Chemical
Magnetic Potential Energy

6. What is Potential Energy?
Energy that is stored and waiting to be used later

7. Gravitational Potential Energy
Potential energy due to an object’s position
Based on mass and height
P.E. = mass x
height x gravity
Don’t look down, Rover!
Good boy!
9.8m/s 2

8. What is Elastic Potential Energy?
How much an object has been compressed or stretched (tension)
Or how difficult it is to compress or stretch
Increase the compression/stretched the EPE also increases

9. Magnetic Potential Energy
Potential energy associated with the position of magnetic objects relative to each other
Opposite Poles
Highest PE when near the edge of attraction
Lowest PE when they pull together
Like Poles
Highest PE when forced together
Lowest PE when they are springing apart
One object is a magnet
- Increase the distance, increase the potential energy

10. Magnetic Potential Energy

11. What is Chemical Potential Energy?
Potential energy stored within the chemical bonds of an object

12. Increase the size of battery – increase chemical energy (DE)

13. More bonds – more Chemical energy

14. Anything that has chemical properties

15. More Calories – More Chemical Energy

17. Electrical Potential Energy aka Electrostatic PE
Measured in Joules
Based on the objects electric charge ( + / - )

18. What is Kinetic Energy? Energy an object has due to its motion
K.E. = .5(mass x speed2)