Across
- 4. fuel a natural, nonrenewable fuel such as coal, oil, or natural gas formed a very long time ago from the remains of living organisms.
- 6. replaceable by natural means in a short period of time.
- 10. a renewable source of energy based on the natural movement of water.
- 11. energy collected from the Sun and converted into usable energy; a renewable resource.
- 12. a gas, usually found in the ground positioned above petroleum deposits, that is burned to obtain energy; a nonrenewable fossil fuel.
- 14. the resources that are present in limited quantity and when used over the limit, they get exhausted.
- 15. energy from turbines that harness the environment of air and convert it to usable energy; a renewable resource.
- 17. resources that are present in abundant quantity, and they keep replenishing.
Down
- 1. energy harnessed from the decay of uranium atoms.
- 2. energy made from biomass
- 3. resources materials from Earth that are used to support life and meet people’s needs.
- 5. not replaceable by natural means within a short period of time.
- 7. materials derived from living things.
- 8. the ability to maintain or support a process continuously over time.
- 9. a hard black solid fuel formed from the remains of plants over millions of years and extracted from the ground; a nonrenewable fossil fuel.
- 13. heat transferred from beneath the surface of Earth and used to produce energy for human use.
- 16. (petroleum)- a flammable, yellow to black liquid composed of hydrocarbons occurring naturally beneath Earth’s surface; a nonrenewable fossil fuel processed to make gasoline used in vehicles.
