Across
- 5. Also known as strip mining, it’s the process of removing minerals near the surface of the Earth.
- 10. A technique that involves pressurized liquid to create cracks in bedrock or shale to release and collect natural gas.
- 11. Fusing two heavy isotopes to create energy.
- 12. A flammable gas from underground used as fuel.
- 13. The process of burning.
- 14. Heat energy from the Earth, using steam to rotate a turbine.
- 15. Energy being created by splitting uranium atoms.
Down
- 1. Highly acidic water caused when air, water, and sulfur mix and dissolve iron.
- 2. A greenhouse gas that is emitted while burning certain fuels.
- 3. The extraction of rocks or minerals from the Earth through shafts (vertical) or adits (horizontal).
- 4. Energy created by moving water, usually in a dam.
- 6. An underground resource that is made from dead plants and animals millions of years ago.
- 7. A liquid fuel that comes from underground and is mostly used for transportation.
- 8. A dark rock made from dead plants from millions of years ago.
- 9. When greenhouse gasses trap heat close to the Earth.