Across
- 2. the change of energy from one form to another
- 3. energy stored in the bonds that hold atoms together in molecules
- 5. the ability to do work
- 7. heat energy from within the earth
- 11. a careful preservation and protection of something
- 12. a source of energy that can be replaced as it is used or that cannot be used up
- 13. energy harnessed from air in motion
- 15. a natural fuel formed in the past from the remains of living things
- 16. an energy source that cannot be replaced by natural means at the same rate that it is consumed
- 19. energy that comes from the force of moving water
- 20. energy radiated from the sun
Down
- 1. the energy of moving objects, for example a car
- 4. the energy of moving electric charges
- 6. something that happens as a result of a particular action or set of conditions
- 8. energy of the moving particles
- 9. the release of unwanted materials into the environment
- 10. reduction in the number or quantity of something
- 14. energy stored in the nucleus of an atom
- 17. the ability to make things move or change
- 18. organic matter that can be used as an energy source