Across
- 3. Occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms.
- 5. A reaction in which two or more atomic nuclei combine to form a larger nuclei, nuclei/neutron by-products.
- 6. A system that uses the sun's energy to generate electricity or heat.
- 8. A renewable energy source that comes from organic materials like plants, animals, and wood.
- 10. The practice of using less energy.
- 12. A fossil fuel that's found underground and used as a fuel and raw material.
- 13. Electricity generated from sunlight.
- 14. A method of extracting minerals by removing the soil and rock that covers them.
- 15. A solid inorganic substance of natural occurrence.
- 16. A naturally occurring mixture of hydrocarbon gases, primarily composed of methane, found beneath the Earth's surface.
- 17. A sedimentary rock that's primarily carbon and is used as a fuel
- 18. A renewable energy source that uses the motion of tides to generate electricity.
- 20. A valuable mineral found in a rock or sediment that's concentrated enough to be mined and processed.
- 21. A renewable energy source that uses falling water to generate electricity.
- 23. Uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electricity.
- 25. The process of restoring land after mining to a safe, productive, and environmentally sound state.
- 26. A form of energy released from the nucleus, the core of atoms, made up of protons and neutrons.
Down
- 1. Uses the sun's heat and light to warm and cool buildings without mechanical or electrical devices.
- 2. Convert sunlight into electricity.
- 4. The process of digging tunnels and shafts to extract minerals from underground.
- 7. Heat energy that comes from the Earth's interior.
- 9. Energy derived from natural sources that are replenished at a higher rate than they are consumed.
- 11. Energy that comes from finite resources.
- 19. A machine that converts mechanical energy into electrical energy.
- 22. The practice of using less energy to accomplish the same task.
- 24. Nonrenewable energy sources that are created from the remains of plants and animals that died millions of years ago
