Unit 11: Electromagnetic Waves Vocabulary

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Across
  1. 1. When energy from a wave passes through an object
  2. 3. The bouncing back of a wave when it hits a surface through which it cannot pass.
  3. 5. Allowing light to pass through (like glass)
  4. 6. The transfer of energy carried by light waves to particles of matter. Radiant energy must be absorbed before it can be transformed into other forms.
  5. 7. The angle of incidence is equal to the angle of reflection
  6. 10. Blocks all light (like wood)
  7. 13. All waves in the EM spectrum travel at this speed
  8. 14. The part of the electromagnetic spectrum that consists of waves detectable by the human eye (ROYGBIV) and appears as "white" light
  9. 15. A lens or mirror that is curved outwards
  10. 17. The curving of a wave as it moves around an obstacle or passes through a narrow opening
  11. 19. A type of wave, such as a light wave or radio wave, that does not require a medium to travel
Down
  1. 2. The release of light energy by particles of matter that have absorbed energy
  2. 4. Semitransparent - allows some light to pass through (like wax paper)
  3. 8. A curved transparent object that refracts light
  4. 9. The range of all EM waves (RMIVUXG) that travel at the same speed but differ in wavelength and frequency
  5. 11. A lens or mirror that is curved inwards
  6. 12. A piece of glass that separates white light into its 7 colors
  7. 16. An opaque surface that reflects light
  8. 18. Bending of a wave as it passes at an angle from one medium to another due to change in wave speed