energy crossword #1

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Across
  1. 2. sound is generated by _____ particles (usually air)
  2. 3. the force that opposes motion or attempted motion
  3. 4. _____ energy is the energy found in objects that are in motion
  4. 7. Which of these light waves has more energy: ultraviolet or infrared?
  5. 9. the acronym for the colors in visible light
  6. 14. In a closed electric circuit, _____ are moving
  7. 16. _____ energy is the energy found in objects that have the capacity for motion
  8. 18. In this course, how many types of kinetic energy have we discussed?
  9. 19. the force that a solid surface exerts in order to prevent an object from breaking through it
Down
  1. 1. _____ in the universe has energy
  2. 5. anything on the _____ spectrum is categorized as light
  3. 6. a push or a pull
  4. 8. Are radio waves categorized as sound or as light?
  5. 10. word that means "large-scale"
  6. 11. the total amount of energy in the universe is _____
  7. 12. an object that is experiencing only the force of gravity is in _____ fall
  8. 13. objects that are in _____ have kinetic energy
  9. 15. molecules at a high temperature move _____ than molecules at a low temperature
  10. 17. we have not mentioned this person in a while