Science pracitce

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Across
  1. 2. a disturbance that transfers energy from one place to another
  2. 6. waves- a wave that moves perpendicular to the direction of the wave
  3. 9. lowest part of wave
  4. 10. interference- when waves add up to make a larger amplitude
  5. 15. wave bounces off and goes into new direction
  6. 16. - highest part of wave
  7. 18. - the wave bends around an object
  8. 19. - the height of the wave
  9. 21. interference- when waves add up to make a smaller amplitude
  10. 23. of reflection-the angle at which the reflected ray bounces off the surface
  11. 24. speed- the distance a wave moves in a certain amount of time
Down
  1. 1. - the length from top of wave to top of wave
  2. 3. - the wave is absorbed and disappears.
  3. 4. a type of material through which the wave travels
  4. 5. wave- radio waves, microwaves ,UV
  5. 7. - particles which are close
  6. 8. of incidence- the angle formed between the normal and incident ray at the point of incidence
  7. 11. - the wave bends as it passes through an object
  8. 12. waves- a wave that travels along the surface of a medium
  9. 13. what frequency is measured in
  10. 14. wave- a type of wave which moves parallel to the direction of the wave
  11. 17. - number of complete waves that pass a given point per sec
  12. 20. wave- it needs a medium to travel through
  13. 22. - particles which are far