Across
- 3. Fuels/ Remains of ancient organisms that with time and pressure convert into coal, oil or natural gas
- 4. the strength and vitality required for sustained physical or mental activity.
- 6. energy form that can be used directly as they appear
- 9. wind, solar, hydroelectric, tidal, geothermal
- 10. mining/ mountaintop removal
- 11. drainage/oxygen, water and pyrite react and form Sufic acid.
Down
- 1. energy transformed state
- 2. derived from sources that will run out or will not be replenished in our lifetime
- 3. another type of nuclear energy
- 5. nuclear energy example
- 6. renewable/ wood and other biomass, biofuels
- 7. mining/ mineral effect of surface, road building
- 8. an energy source that can be easily replenish