Physics

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Across
  1. 1. An electromagnetic wave within the range of radio frequencies
  2. 5. The throwing back by a body or surface of light, heat, or sound without absorbing it.
  3. 6. The bending and spreading of a wave, such as a light wave, around the edge of an object.
  4. 7. A wave vibrating at right angles to the direction of its propagation.
  5. 8. the bending of light as it passes from one substance to another.
Down
  1. 2. The angle that an incident line or ray makes with a perpendicular to the surface at the point of incidence.
  2. 3. the smallest angle of incidence for which light is totally reflected.
  3. 4. the distance between a point on one wave and the same point on the next wave