Across
- 3. The use of less energy to perform the same task or produce the same result.
- 4. Energy made using organic material.
- 6. Makes electricity through chemical processes.
- 7. Energy that is still in development.
Down
- 1. A machine used to turn forms of energy into electrical energy.
- 2. Fuel made from the remains of organisms millions of years ago.
- 5. Energy made using the earths heat.
- 8. Energy produced from sources that are naturally replenished and do not run out.