Across
- 4. The gas that is turned to steam to power turbines
- 5. What energy is first burned in a boiler?
- 7. What kind of energy produces radioactive waste?
Down
- 1. What kind of machine uses wind to create energy?
- 2. What type of energy uses water?
- 3. What substance is mined from the seabed?
- 6. What type of energy uses the sun?
- 8. What is mined from layers of rock?