Across
- 2. ______ is energy generated using falling water.
- 5. __________ is a secondary source of energy which we use daily.
- 8. _____ energy is the type of energy which causes pollution.
Down
- 1. a form of renewable energy harnessed from volcanoes is _________ energy.
- 3. energy that is generated from uranium and plutonium is _______ energy.
- 4. _________ energy is generated from the sun.
- 6. is the ability to do work.
- 7. ________ energy sources can be easily replenished.