1. Forms of Energy Add these notes to your flip folder. Refer to Coach book pages 112-113, textbook section 9-1, and Worksheet 18

2. a. Explain energy transformation in terms of the Law of Conservation of Energy. S8P2. Students will be familiar with the forms and transformations of energy.

3. The law of conservation of energy states that: Energy is never destroyed Energy is never created Energy may be transformed or converted from one form to another Energy is constantly changing forms

4. b. Explain the relationship between potential and kinetic energy. Kinetic Energy Energy of Motion Depends on Speed Mass More speed = more KE More mass = more KE

5. Potential Energy—Stored energy Energy of position, shape, or condition More weight = more PE More height = more PE

6. Kinetic energy Potential energy

7. Kinetic energy Potential energy

8. Kinetic energy Potential energy

9. Kinetic energyPotential energy

10. c. Compare and contrast the different forms of energy (heat, light, electricity, mechanical motion, sound) and their characteristics. Forms of Energy include:

11. Mechanical Motion Energy-- energy caused by objects that are moving

12. Electrical energy—energy of moving electrons

13. Thermal energy (heat)—the total motion of the atoms and molecules within a substance ex. Atoms move faster in hot water than ice water

14. Light (radiant energy)—electromagnetic energy that travels in waves and can travel through empty space (a vacuum) ex. Sunlight, X-rays, microwaves, see p.636

15. Stored (potential) energy Found in objects that want to bounce back into their natural shape when they are stretched, squished, or turned

16. Chemical energy —energy stored in the bonds of atoms and molecules (released during chemical changes)

17. Nuclear energy—energy which holds together the nucleus of an atom. Released when atoms are split apart (fission) or joined together (fusion) ex. nuclear power plants

18. Gravitational potential energy—energy stored because of where it is placed (higher = more PE) (Depends on weight and height)

19. Sound energy—energy of vibrations carried through solids, liquids, or gases (It travels in waves but cannot move through empty space.)

20. Now you’ve got them all. Study them tonight!

21. Resource websites: http://www.eia.doe.gov/kids/energy.cfm?page=about_forms_of_energy-basics http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/