Across
- 4. A fossil fuel formed from marine organisms that is often found in tilted or folded rock layers and is used for cooking and heating.
- 5. A natural resource that is finite, or takes thousands of years to replace.
- 6. Energy such as solar, wind, or hydroelectric energy that replaces traditional fossil fuel sources, such as coal, oil, and natural gas.
- 9. Renewable energy derived from burning organic materials, such as wood and alcohol.
- 11. A natural resource that can be used and replaced within a human timeframe.
- 13. Nonrenewable energy resources, such as oil and coal, formed over millions of years from the remains of dead plants and other organisms.
- 14. that meets present needs without compromising the future generation's needs.
Down
- 1. Derived from renewable, zero-emission sources.
- 2. Any material made naturally that is used by humans or living things.
- 3. A resource that remains in constant supply and will not run out.
- 7. Renewable energy source that uses atomic reactions to create electricity.
- 8. Electricity produced by water power using large dams in a river.
- 10. Inexhaustible energy resource that uses thermal energy from the Earth to create steam to produce electricity.
- 12. Energy from the Sun is clean, inexhaustible, and can be transformed into electricity by solar cells.