Physics Crossword 14

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Across
  1. 2. exposure to radiation (11)
  2. 7. number of fundamental forces (4)
  3. 9. the turning effect of a force (6)
  4. 11. vector and scalar quantities have this (9)
  5. 13. causes objects to fall (7)
  6. 15. directly proportional to resultant force (4)
  7. 16. directly proportional to resultant force (12)
  8. 17. the explosion of a star (9)
  9. 18. type of velocity reached by falling objects (8)
  10. 22. shared in a series circuit (7)
  11. 23. force that is the overall force on an object (9)
  12. 24. ____ pressure decreases with height (11)
  13. 25. directly proportional to force up until the limit of proportionality (9)
Down
  1. 1. vector quantities have this but scalar quantities don’t (9)
  2. 3. the gradient of a velocity-time graph (12)
  3. 4. the gradient of a distance-time graph (5)
  4. 5. type of wave that sound is (12)
  5. 6. force experience by objects in a fluid (8)
  6. 8. the rate of doing work (5)
  7. 10. radioactivity of sources ____ over time (8)
  8. 12. type of wave that all EM waves are (10)
  9. 14. when waves change direction at a boundary (10)
  10. 19. specific ____ heat (6)
  11. 20. often represented “t” in equations (4)
  12. 21. number of types of EM waves (5)