Earth Vocabulary

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Across
  1. 3. how much
  2. 6. how hot or cold something is
  3. 8. the sun and planets that move around it
Down
  1. 1. represents the earth
  2. 2. provide for
  3. 4. the study of the Sun, Moon, stars and planets
  4. 5. the outside layer of something
  5. 7. heat