Sandra energy puzzle

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Across
  1. 4. unit measure is meter (m)
  2. 11. use sunlight to power machines and to heat buildings
  3. 12. made of tiny particles held together by forces called bonds
  4. 13. need a wheel,post and axel
  5. 16. pulls you into earth
  6. 17. movement of a substance from one place to another
  7. 20. a device with few or no moving parts
  8. 22. motion of waves
  9. 24. 2 right object or bar that pipits around a fixed point
  10. 25. movement of electrons
  11. 26. stored energy
  12. 27. formed by dead plants and animals
  13. 30. gas liquid transfer
Down
  1. 1. uses the energy of flowing water
  2. 2. blowing air can spin turbines to produce electricity
  3. 3. the vibration or movement of atoms and molecules
  4. 5. lost of force little effort
  5. 6. supply is limited
  6. 7. unit measure is newton (n)
  7. 8. push or pull
  8. 9. there supply is unlimited
  9. 10. unit measure is joule (j) or Newton-meter(nm
  10. 14. the suns earths main source of energy
  11. 15. living or recently living organisms
  12. 18. slopping surface ramp or wedge
  13. 19. energy that travels in heat waves
  14. 21. reduce the amount of force needed to lift an object
  15. 23. stored in the bond of atoms and molecules
  16. 28. movement of energy through substances in waves
  17. 29. unit measure of when finding work