Unit 9 Interactive Folder

9. When sunlight strikes a solar cell, made out of semiconductor material like silicon, it excites electrons which makes them move and flow from one layer of the cell to the other, forming a current
10. Hard to store the heat overnight at high enough temps to boil water – need a heat absorbing medium like molten salt, which makes this technology tricky, more expensive, and not common
13. Places where magma is closer to the surface (like along divergent boundaries) are the best locations.
14. Energy from the sun (which runs on nuclear fusion)
15. The power of moving water
16. Most common form of hydro power
19. Captures the power of waves crashing into shore all day and night
21. Can burn just plant material
22. Solar, Wind, Geothermal, Biomass, Hydro
23. areas with consistent wind with many turbines.

1. Sunlight is used to heat buildings directly, no pumps or fans, no moving parts.
2. Uses a solar collector- a big glass/mirror structure on the roof full of pipes containing a water mixture that is heated, like plants inside a greenhouse.
3. Works like a dam with turbines along the shore
4. Often classified as a biomass technology, but can also be powered with hydrogen atoms from water making it a form of hydro too
5. use the power of falling water to turn turbines. Water has to fall from high up in order to generate enough force to move the turbine.
6. Energy from organic living things or gases created by living things
7. Burning biomass will NOT add to a net increase in CO2 in the atmosphere
8. Uses difference in temp between upper layer of water and deeper layers
11. actually generated by the sun- so in reality Wind Power is a form of SOLAR ENERGY
12. Use bacteria to break down animal wastes without the presence of oxygen
17. turn the wind’s Kinetic energy into electricity
18. no longer need to rely on other countries
20. Ethanol and biodiesel
24. Earliest energy source