Across
- 2. Example of type of coal mines
- 5. Top countries consumption of energy
- 6. method used to extracts ore over a large, flat terrain in long strips
- 9. method used to extract ore from below the surface of the earth
- 11. Is located above oil deposits
- 13. Ancient organisms that with time and pressure convert into coal, oil, natural gas.
- 14. energy in a transformed state
Down
- 1. energy forms that can be used directly as they appear in nature
- 3. currently the main pollutant of surface water and is caused when water flows over materials contains sulfur forming acidity.
- 4. its flammable and consists mainly of methane and hydrocarbons, its occurring naturally underground
- 7. Energy derived from sources that will run out or will be replenished in our lifetime
- 8. the ability to do work
- 10. An energy source that can be easily replenished
- 12. Most abundant fossil fuel
- 15. extracted by drilling into the ground