Planets

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Across
  1. 3. the hottest planet in our solar system
  2. 4. the 6th closest planet to the sun
  3. 5. the closest planet to the sun
  4. 8. what kind of movement is passing something to someone
  5. 12. who was one of the first scientists to study gravity and force
  6. 14. the first man to walk on the moon
  7. 18. in tug of war, when one team is pulling with a force of 100 N and the other 80 N, what is the net force?
Down
  1. 1. the biggest planet in our solar system
  2. 2. what kind of movement is opening a door inwards
  3. 4. what seasons do solstices occur
  4. 5. in the equation F = ma, what does m represent
  5. 6. is magnetic force a real force
  6. 7. the planet farthest away from the sun
  7. 9. the coldest planet in our solar system
  8. 10. the first name of who discovered planets
  9. 11. how many types of forces are there?
  10. 13. Which force always pulls downward on objects?
  11. 15. what is force measured in
  12. 16. ​the biggest star in our solar system
  13. 17. the smallest planet in our solar system
  14. 18. earths place in closeness to the sun