1. Starter
Directions: Copy the following examples. Answer using the following terms: Mechanical, Thermal, Chemical, Electrical
Hydroelectric dam
A horse pulling a cart
A thermos of hot coffee
The bonds holding atoms together in food

2. Review Directions: Complete the statements below.
What is the formula for work?
What is the formula for power?
What is the work if a horse pulls a box 5m with a force of 10 N?
It takes 8 seconds for a pulley system to lift a load with 400 N.m. How much power is required?

3. Review
Directions: Draw the following table. Match the example up with the correct simple machine type: Wedge, Lever, Wheel and Axle`, Pulley
Example Type
Shovel
Axe
Doorknob
Window blinds

4. What Energy Form?
Directions: Label the picture with the correct energy form. Electrical, nuclear, Thermal, and Mechanical a. b. c. d.

5. Energy Transformation

6. Directions: Each object starts with electrical energy but it converts that energy into another energy. What energy type does it convert into? Thermal, Mechanical, or Electromagnetic

7. Science360

8. Kinetic vs. Potential Kinetic energy Potential Energy
Motion
The closer the object is to the ground the greater the kinetic energy.
KE=1/2(m)v2
KE= kinetic
m= mass
v= velocity
Unit=Joule
Stored (Has the potential to move)
The higher the object the greater the potential energy.
PE=m(g)(h)
PE=Potential
m= mass
g= gravity
h= height
Unit=Joule

9. Explain: Gravitational Potential Energy
On the front of the index card, write the following information.
Stored energy.
Formula:
PEg= mgh PEg= FWh
Variable Units
PEg– gravitational potential energy J
m – mass kg
h – height m
FW – weight N

10. Explain: Gravitational Potential Energy
On the back of the index card, write the following information.
PEg= mgh PEg= FWh
PEg
PEg m g h FW h

11. Explain: Kinetic Energy
On the front of the index card, write the following information.
Density is how compact a material is.
Formula:
KE=½ mv²
Variable Units
KE – kinetic energy J
m – mass kg
v – velocity m/s

12. Explain: Kinetic Energy
On the back of the index card, write the following information.
KE=½ mv² KE m v v

13. The ball starts at rest waiting (PE) to move
The ball starts at rest waiting (PE) to move. Then with a force it moves down the hill (KE).

14. If an object has PE it will have KE
If an object has PE it will have KE. You cannot have one without the other.

15. KE and PE

16. Exit Slip
Directions: Copy the examples and label which one is KE or PE.
1. a moving skateboard
2. a dry cell of a battery
3. a rock at the edge of a cliff
4. an acorn hanging from an oak tree
5. a glass of milk
6. a person climbing a ladder
7. Gasoline
8. a piece of celery
9. a basketball passing through a hoop
10. blowing wind