1. How do we define Energy? The ability to do work & cause a change. Unit of measurement is the Joule ( J ) Examples of how we use energy: – cars move, bake a cake, play our favorite songs on the iPOD, cell phone, grow food.

2. Discuss  Turn to your partner  Name as many forms of energy as possible.  Fill in the brainstorm box on your Notesheet  You have 1 minute - GO

3. Light Electrical Chemical Thermal Nuclear Mechanical

5. 1. Light (radiant) Energy  Energy from the sun.  light energy travels by electromagnetic waves.

6. 2. Chemical Energy  Energy stored in the bonds of atoms and molecules.  Examples: gas, coal, food

7. 3. Nuclear Energy  Energy stored in the nucleus of an atom; LARGE AMOUNTS OF ENERGY!!! (holds the nucleus together).

8. 4. Electrical Energy  Energy due to the flow of negatively charged particles (electrons).  Examples: static electricity, lightning, battery circuit.

9. 5. Thermal (heat) Energy  The vibration and movement of the atoms and molecules; as heat increases, atoms move faster.  The flow of thermal energy is called heat.

10. 6. Mechanical Energy Energy based on position and motion of an object. – Examples – compressed spring, stretched rubber band, ball rolling down a hill.

11. Two types of Mechanical Energy a. Potential – stored energy. b. Kinetic – energy that an object has because of its motion. * Mechanical Energy = Potential + Kinetic

12. Short Video  Discovery Education : “Forms of Energy & Energy Transformation” Discovery Education

13. Law of Conservation of Energy Energy can neither be created nor destroyed but can be changed (transformed) from one kind to another. The total energy of an object never changes (it is conserved).

14. Examples of energy transformations:  Light bulb: electrical to light.  Photosynthesis: light to chemical.

15. Now it’s your turn 1. The energy stored in a banana is __________ energy. 2. A hair dryer converts __________ energy to _____________ energy. 3. Now complete the left side and summary section of your notes.

16. Now it’s your turn! Energy Transformation Worksheet: 1. With your partner or in your group, come up with 5 other examples of energy transformations and write them down, without the answers. 2. When you are done, switch your examples with another group. Try to identify the energy transformation.

17. Which form of Energy? 1. Thermal Energy 2. Light Energy 3. Chemical Energy 4. Electrical Energy 5. Nuclear Energy 6. Mechanical Energy 1. Energy due to an object’s motion or position: 2. energy carried by electromagnetic waves. 3. energy due to the movement of molecules in substances. 4. energy from the movement of electrons. 5. energy stored/contained in bonds of atoms and molecules. 6. energy stored in the nucleus of an atom (holds the nucleus together).