1. What is Energy? Unit 3 - Energy

2. What is Energy? 1. Energy makes change. 2. Energy produces or makes a change of some kind. 3. Scientists define energy as the ability to do work.

3. Ways Energy is Used 1. Motion – moving cars along the road or boats over the water. 2. Heat – baking a cake in the oven and keeping ice frozen in the freezer. 3. Sound – listening to our favorite songs on the radio. 4. Light – lighting our homes. 5. Growth – making our bodies grow and minds think.

4. Practice  Where does the energy come from?  How is the energy used?

5. Practice  Where does the energy come from?  How is the energy used?

6. Practice  Where does the energy come from?  How is it being used?

7. Practice  Where does the energy come from?  How is the energy used?

8. Practice  On your paper write down the following objects: ComputerComputer ClockClock LightsLights PhonePhone Air ConditionerAir Conditioner TelevisionTelevision  Beside the object identify where the object gets its energy and how it is used.