Physics Crossword 2

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Across
  1. 1. electric charges create an electric ____ (5)
  2. 4. wave where the direction of wave travel is perpendicular to the oscillation of the particles (10)
  3. 6. SI base unit for mass (8)
  4. 10. the H in LHC (6)
  5. 17. a scalar quantity has ____ only (9)
  6. 18. mathematician at NASA whose calculations were crucial to landing men on the moon (7)
  7. 19. planet whose equator is nearly at a right angle to its orbit (6)
  8. 20. branch of physics which includes the study of heat and energy (14)
  9. 23. a cloud of gas and dust in space which can collapse under gravity to form a protostar (6)
  10. 26. the first woman to win a Nobel Prize (5)
  11. 27. physicist famous for his work on black holes (7)
  12. 30. one of the countries CERN sits on the border of (11)
  13. 31. physicist credited with the discovery of the electron (7)
Down
  1. 2. useful power output / total power input (10)
  2. 3. prefix shown with the letter M (4)
  3. 5. process of exposing an object to a source of radiation (11)
  4. 7. a renewable energy resource (10)
  5. 8. transformers have two ____ (5)
  6. 9. SI base unit for temperature (6)
  7. 11. an example of a longitudinal wave (5)
  8. 12. branch of physics which includes the study of sound (9)
  9. 13. university where Isaac Newton was educated (9)
  10. 14. a ____ image appears to come from behind the lens (7)
  11. 15. not a planet :( (5)
  12. 16. when a wave is passed across or through a material it is ____ (11)
  13. 18. a precious stone and a unit (5)
  14. 21. best known for his theory of general relativity (8)
  15. 22. electrons can gain energy from ____ EM radiation (9)
  16. 24. a Greek letter and a type of decay (5)
  17. 25. the energy needed to change from a solid to liquid is the specific latent heat of ____ (6)
  18. 28. in a main sequence star, hydrogen nuclei undergo ____ to form helium nuclei (6)
  19. 29. prefix shown with the letter k (4)