Across
- 2. Energy that is generated from running water.
- 5. Burning of __________ causes air pollution even though it is a renewable source of energy.
- 7. Energy cannot be created or destroyed. It can only be __________ from one form to another.
- 8. _________ fuels are non-renewable energy sources that will eventually run out.
Down
- 1. Burning of fossil fuels produce these gases which are linked to global warming.
- 3. Ability to do work
- 4. _________ energy from the Sun
- 6. Energy sources that are replenished naturally and will not run out.