Across
- 5. the ground is blasted so that ores near earth's surface can be removed and carried to refineries to extract the minerals
- 10. fracking
- 11. a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
- 12. this is the earth's cleanest burning fossil fuel
- 13. generates heat
- 14. a type of renewable energy taken from the Earth's core
- 15. when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms
Down
- 1. contaminated drinking water, disrupted growth and reproduction of aquatic plants and animals, and the corroding effects of the acid on parts of infrastructures such as bridges.
- 2. the burning of fossil fuels and the manufacture of cement.
- 3. the extraction of rocks, minerals and industrial materials, other than coal, oil and gas, from the earth by developing entries
- 4. a form of renewable energy that uses the power of moving water to generate electricity.
- 6. made from dead plants and animals
- 7. mostly used for transportation
- 8. the united states has more of this than any other fossil fuel resource
- 9. the trapping of the sun's warmth in a planet's lower atmosphere