Across
- 4. a hard, black material formed from plants that lived about 300 million years ago
- 5. fuel a source of energy that comes from the remains of plants and animals that lived long ago
- 7. the smallest particle of matter
- 8. a machine that makes electricity
- 10. an electric current used as a source of energy
- 11. the ability to do work
Down
- 1. the energy of moving water
- 2. energy energy from atoms that change form
- 3. plant a place where energy can be collected from a power source and passed to customers
- 6. energy power from sunlight
- 9. a set of blades turned by steam, water, or wind