SOLAR POWER

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Across
  1. 2. what is nearest to another
  2. 4. the pull on the Earth from the sun
  3. 6. not small and not big
  4. 7. a measure of how hot something is
  5. 9. a sun that is a burning ball of gases
  6. 10. very, very big; enormous
Down
  1. 1. on fire
  2. 3. one complete turn around the sun
  3. 5. the time it takes for the earth to orbit the sun once
  4. 8. the planet we live on