science

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Across
  1. 1. the height of a wave.
  2. 4. to thrown or give off or out.
  3. 6. illumination when light is directed onto a surface and reflects off
  4. 9. radio waves that are sent out by a device
  5. 10. ray light coming from a source traveling in any one direction in a straight line.
Down
  1. 2. energy when you move or do something
  2. 3. the direction you look at something
  3. 5. to send from one person or place to another.
  4. 7. the ability to do work, to make things happen and to cause changes.
  5. 8. illumination when light is directly into the surface