Savannahs crossword

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Across
  1. 1. wavelength short
  2. 4. energy possesses by virtue of being in motion
  3. 8. equivalent to one joule per second
  4. 10. the degree of compactness of a substance
  5. 11. the ability to do something
  6. 12. equal to the work done by a force
  7. 13. group of atoms bonded togetherel
  8. 14. large body of matter
  9. 18. energy released during nuclear fission/fusion
  10. 19. energy physical energy resulting from radiation
Down
  1. 2. energy resulting from charged particles
  2. 3. of something in a given direction
  3. 5. electromagnetic radiation
  4. 6. strength and vitality required for activity
  5. 7. energy Energy stored in chemical compounds
  6. 9. energy responsible for its temperature
  7. 11. energy the energy possessed by a body
  8. 15. something is able to move or operate
  9. 16. electromagnetic waves or as moving particles
  10. 17. heat or electricity is directly transmitted
  11. 18. give a mass of one kilogram an acceleration