Across
- 2. The percent of energy to perform atask.
- 3. Combining two lightweight nuclei into a heavyweight atom
- 7. Oil extracted from the earth.
- 8. Energy made using the earths heat.
- 10. Fuel made from the remains of organisms millions of years ago.
- 11. Energy made using organic material.
- 12. The energy stored in an atoms nuclei.
Down
- 1. A machine used to turn forms of energy into electrical energy.
- 4. Energy produced from sources that are naturally replenished and do not run out.
- 5. Energy that is still in development.
- 6. Makes electricity through chemical processes.
- 9. The splitting of an atom.