Across
- 2. electricity generated from flowing water
- 4. using less energy so we can have more in the future
- 6. electricity generated from wind moving through turbines
- 7. something that never runs out
- 9. a non-renewable resource
- 10. non-renewable resources
Down
- 1. energy from the sun
- 3. electricity generated from heated rocks in earth
- 5. something that will eventually run out
- 8. energy made from waste