Across
- 4. Energy of radio waves
- 6. Energy is not created or destroyed
- 9. Heat energy
- 10. Energy in stretched objects
- 11. Turn off these to save energy
- 13. Efficient light bulbs
- 15. Renewable energy source
- 16. Energy stored in the nucleus
- 18. Ability to do work
- 19. Changing one energy form to another
- 20. Energy in chemical bonds
Down
- 1. Potential energy due to height
- 2. SI unit of energy
- 3. Energy of motion
- 5. Sustainable power source
- 7. Light energy type
- 8. Substance powering engines/generators
- 12. Energy in sound waves
- 14. Energy in magnets
- 17. Reducing energy use