Across
- 2. of electric current. (11)
- 3. ability to do work or provide power. (5)
- 6. wheel capturing power from air or water flow. (7)
- 8. of power from the sun. (5)
- 10. that can be naturally replenished. (9)
Down
- 1. generated by moving air. (4)
- 2. used for heating and electricity, often from natural deposits. (3)
- 3. capacity to do work or produce heat. (6
- 4. from inside the Earth used as a power source. (10)
- 5. material burned as fuel. (7)
- 7. black rock burned for fuel. (4)
- 9. fuel used in vehicles. (3)
- 11. released from splitting atoms. (7)