Chapter 28/29 - Myri Haley

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Across
  1. 2. Planetesimals accreted more matter to become planets.
  2. 6. A tiny fraction of this energy reaches and sustains Earth.
  3. 7. moving backward; having a backward motion or direction; retiring or retreating. inverse or reversed, as order.
  4. 8. a hypothesis that is supported by the results of experimentation and observation.
  5. 10. It is slightly larger than our Moon.
Down
  1. 1. supported the big bang hypothesis
  2. 3. is a rule that correctly describes a natural phenomenon.
  3. 4. Is the next closest planet to the Sun, but is the hottest
  4. 5. when a light source is moving toward an observer, the wavelengths appear shorter.
  5. 6. their color is indicated by its temperature
  6. 9. third planet from the sun