Vocabulary

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Across
  1. 6. the study of stars and planets
  2. 7. provide what is needed for something
  3. 8. the outside of something
Down
  1. 1. how cold or hot something is
  2. 2. heat
  3. 3. the world
  4. 4. system the sun and the planets that move around it
  5. 5. how much of something there is