1. Daily Review #2 5. Which of your marshmallow ovens worked the best? Why? Make sure you include in your description the science of why it was the best.

2. Photovoltaics Video Movement of electrons Where? – Buildings – Farms Farms – Space Cost

3. Wind  What is wind?  How is it used?  Wind turbines  Spin blades  Turn turbine  Spin coil in a magnet/generator  Where is it used?  Individually  Farms  Water  Electricity

4. Photovoltaics Advantages (Pros) Disadvantages (Cons)  EES – 2 EES – 2  EES – 3 EES – 3  EES – 4 EES – 4  EES – 5 EES – 5  EES – 8 EES – 8

5. Wind Advantages (Pros) Disadvantages (Cons)  EES – 2 EES – 2  EES – 3 EES – 3  EES – 4 EES – 4  EES – 5 EES – 5  EES – 8 EES – 8

6. Biofuels  Plant or animal material  3 types  Biomass  Wood, yard waste,  Methane from landfills, feedlots  Burned and used to create steam  electricity  Biodiesel  From: vegetable oils or algae  Byproduct: Glycerin  Pure or mixed  Produces less energy than diesel  Decreased emissions  Storage

7. Ethanol  Corn or sugar cane  Created  Mixed with water and enzymes  Heated/cooked  Liquid = ethanol  Solids = animal feed  Used in vehicles  Mixed with gasoline  Pure  Efficiency – compared to gas  Uses less energy to produce  Can produce less energy when burned  Decreased emissions