Physics Crossword 8

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Across
  1. 1. the turning effect of a force (6)
  2. 10. the period of a wave is the reciprocal of the ____ (9)
  3. 12. there are ____ fundamental forces (4)
  4. 13. this group of particles includes muons and neutrinos (6)
  5. 15. force per unit area (8)
  6. 16. the hand you use to check the direction of the current and magnetic field (5)
  7. 17. falling objects eventually reach a ____ velocity (8)
  8. 19. adding a resistor in parallel ____ the total resistance (7)
  9. 24. has the quark configuration udd (7)
  10. 25. the I-V graph for an Ohmic conductor at constant temperature is ____ (6)
  11. 26. charge x potential difference (6)
  12. 27. our model of the solar system was initially ____ (10)
  13. 28. smaller planets in our solar system are primarily made of ____ (4)
  14. 29. an object floats if the upthrust is equal to its ____ (6)
Down
  1. 2. magnets that can have their magnetism turned on and off (14)
  2. 3. an example of a longitudinal wave (5)
  3. 4. the colour of a sunset on Mars (4)
  4. 5. waves changing direction as they enter a new medium (10)
  5. 6. mass x velocity (8)
  6. 7. ammeters are connected in ____ (6)
  7. 8. electrons have a very small de ____ wavelength (7)
  8. 9. all waves can be ____ (8)
  9. 11. SUVAT is used when acceleration is ____ (8)
  10. 14. the first planet found using a telescope (6)
  11. 15. protons have a ____ charge (8)
  12. 18. a greater ____ leads to a smaller de Broglie wavelength (8)
  13. 20. Laika the ____ was one of the first animals in space (3)
  14. 21. the rate of energy transfer (5)
  15. 22. the Earth ____ the Sun (6)
  16. 23. the only planet in our solar system not named after a God (5)
  17. 29. a ripple tank can be used to study the properties of ____ waves (5)
  18. 30. number of Gamma photons produced during annihilation (3)