U3: Telescopes & EM Spectrum

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Across
  1. 4. Particles of light that carry energy.
  2. 6. The height of a wave's crest.
  3. 7. The distance between successive crests of a wave, such as electromagnetic radiation.
  4. 8. The number of complete wavelengths that pass a point in a given time.
  5. 9. A shift in the spectrum of an object toward shorter wavelengths.
  6. 11. The portion of the electromagnetic spectrum that is visible to the human eye.
Down
  1. 1. A form of energy that exhibits wavelike behavior as it travels through space.
  2. 2. The process by which an object takes in electromagnetic radiation.
  3. 3. A shift in the spectrum of an object toward longer wavelengths.
  4. 5. An instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.
  5. 10. The speed at which light travels in a vacuum, approximately 3.00 x 10^8 meters per second.
  6. 12. The production and discharge of something, such as radiation.