1. Energy Conservation and Transfer

2. Energy Energy is the ability to do work ( it makes things happen) Work – applying a force to move an object (transferring energy) You have to exert a force AND move something to qualify as doing work.

3. Types of energy Kinetic – energy of a moving object Potential – energy that is stored in an object because of its position demo

4. Types of energy Chemical – energy stored in bonds of molecules ex : coal, food Solar – energy from the sun Electrical – when electricity creates motion, light, or heat ex: battery

5. The Law of Conservation of energy: energy can not be created or destroyed, only transferred Can lose ability to use energy

6. Transferring Energy Energy transfer = energy is moved from one location to another During energy transfers, (at least a little) energy is always lost in the form of heat Efficiency varies

7. Energy as fuel Fuels - concentrated sources of energy Fossil fuels – concentrated biomass

8. Types of Solar Energy Photovoltaic cells – convert suns rays into electricity

9. How photovoltaic cells can be used

10. Types of Solar Energy Solar Batteries – charged using solar panels Solar Reflector – curved mirror that concentrates sunlight and generates electricity video

11. Video Questions 1. Electricity is produced by burning ____ to make _____ which powers a ______. 2. Fossil fuels cause ______ in cities. 3. Black _____ the most solar heat. 4. What are 3 benefits of using solar energy? 5. What are 3 downsides of using solar energy?

12. Renewable resource: produced at the same rate it is used Ex - ? Wind movie Types of Energy Resources

13. Non renewable energy –regenerated (created) slower than they are used Energy career movie

15. Impacts of Energy Resources Pros and Cons about energy resources Negative affects Movie

16. 1. Why was the dam built? 2. List 3 ways the native people of Columbia were affected by it. 3. List 5 ways oil can affect plants/animals.

17. Energy Pros and Cons Type of energyPros (positives)Cons (negatives) Nuclear No pollution, no destruction of the earth, inexpensive Releases radioactive waste, can be deadly Solar At least one per box Wind Fossil Fuels Hydroelectricity

18. Conserving Energy The practice of decreasing the amount of energy you use Energy movies 1 and 2