What is Light?

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Across
  1. 1. light composed of continuous spectrum of colors
  2. 3. spectrum the continuous sequence of colors that make up white light
  3. 5. a method of energy transfer where energy travels in the speed of light
  4. 6. energy that makes life possible on life
  5. 7. is an electromagnetic wave
Down
  1. 2. spectrum the classification of electromagnetic waves by energy
  2. 4. any physical substance which energy can be transferred through