Across
- 3. the use of falling or fast-running water to produce electricity
- 6. the process through which heat gets trapped near Earth's surface
- 7. a tremor in the Earth's surface
- 8. the energy powered by the Sun
- 9. the energy generated by splitting atoms
Down
- 1. energy generated by the ocean waves
- 2. this source of energy is related to the heat inside the earth
- 4. this energy is made from biomass, woodchips, municipal waste, among others
- 5. a dark oil found in underground reservoirs