Across
- 3. This form of energy comes from the force of moving water.
- 4. Used in solar panels to actively convert sunlight into electricity.
- 8. This is the leading primary energy source of the United States in 1991.
- 9. Geothermal energy is created by this process that occurs beneath the Earth's surface that breaks down elements.
- 10. This object found in nature accounts for 90% of biomass energy.
- 11. In this process in the sun, intense heat causes hydrogen atoms to break apart and fuse together to create helium atoms, causing a loss of mass to be emitted as energy in space.
- 12. The unit of measurement used to express the heat contained in energy resources is known as this acronym.
- 13. When analyzing hydropower, the __________ ________ of the water moving is converted to mechanical energy which can be used to produce electricity.
- 15. This form of energy is produced in the core of the sun.
- 17. The most common way to get energy from biomass is by _________.
- 18. In this type of home heating, special mechanical equipment is not needed to heat the home (such as trapping light inside to increase the temperature of the home).
- 20. A type of wind energy machine that is easier to maintain and can accept wind from any direction.
- 21. Acronym for another form of hydropower that uses the temperature difference between the surface and deep ocean waters to boil and recondence fluids.
- 23. Another form of hydropower that uses the enormous power of ocean tides.
- 24. This is a main second energy source, which means that we must use a primary source to produce it.
- 25. This form of energy is from the intense heat within the Earth.
- 26. This form of renewable energy is literally just air in motion.
Down
- 1. A large area of wind energy machinery that sell electricity back to utility companies for distribution.
- 2. The burning of ________ _________ is believed to contribute significantly to acid rain and global warming.
- 5. This form of energy source is finite and will run out at some point (such as coal, petroleum, and natural gas).
- 6. A type of wind energy machine that have blades that look like airplane propellers and produce more electricity that its counterpart.
- 7. This form of energy source can be replenished quickly, such as solar, hydropower, wind, geothermal, and biomass.
- 14. This form of renewable energy is any energy from an organic substance.
- 16. This is the specific form of geothermal energy that is mostly used when converting water to steam.
- 19. In this type of home heating, special equipment is used to collect and distribute solar energy.
- 22. The energy stored in biomass is through this common biology term, which is known as using sunlight, water, and carbon dioxide to create certain products for our world.