Earth in Space

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Across
  1. 5. Part of the earth that receives the most sunlight.
  2. 7. What was the first human made satellite?
  3. 9. Earth going around the sun, moon going around the earth.
  4. 10. How long does each year last, in words.
Down
  1. 1. What is it called when you cannot see the moon at all?
  2. 2. What is the name of the force which keeps the planets in orbit around the sun?
  3. 3. Where does a magnetic compass actually point to?
  4. 4. What is it called when the complete moon is visible?
  5. 6. What is a natural satellite?
  6. 8. Part of the earth that receives the least sunlight.
  7. 11. Effect that makes the seasons happen.