Motion on Earth and in Space

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Across
  1. 2. units time is measured in
  2. 7. planet famous for having rings
  3. 9. direction the Earth spins in
  4. 10. coldest season
  5. 13. units for gravity
  6. 19. how many hours it takes for the Earth to spin around once
  7. 20. caused by the tilt of the Earths axis
  8. 21. closest planet to the sun
  9. 22. what happens when we are facing the sun
Down
  1. 1. large rock that orbits the Earth
  2. 2. season where the days are longest and temperatures are hottest
  3. 3. can be made when a really big star dies
  4. 4. units speed is measured in
  5. 5. it takes the Earth one ______ to orbit the sun
  6. 6. units for mass
  7. 8. biggest planet in the solar system
  8. 11. units for weight
  9. 12. season where a lot of flowers start growing
  10. 14. what happens when we are facing away from the sun
  11. 15. attraction of smaller objects towards larger ones, e.g. ____ is what keeps us on the Earths surface
  12. 16. season where leaves fall off trees
  13. 17. ball of gas in space that creates light
  14. 18. units distance is measured in