Astronomy Review

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Across
  1. 1. the Earth moves faster when its ____________ to the sun
  2. 4. the season a hemisphere is in when the corresponding pole is tilted toward the sun
  3. 7. the change in the direction of the axis of a celestial body
  4. 11. the transfer of energy through space
  5. 14. the Earth moves slower when its _____________ from the sun
  6. 15. the celestial body responsible for tides on Earth
  7. 17. when one object orbits another
  8. 18. the change in angle of the axis of a celestial body
  9. 20. the center of gravity between two celestial objects
Down
  1. 1. the transfer of energy between two touching objects
  2. 2. the spinning of a celestial object on its axis
  3. 3. when the hemisphere is tilted away from the sun
  4. 5. the spectrum on which waves/energy are transferred
  5. 6. 23.5 degrees
  6. 8. the movement that causes day and night
  7. 9. what you experience when you face away from the sun
  8. 10. the process that creates energy in the sun
  9. 12. how long one rotation takes
  10. 13. how long one revolution takes
  11. 16. what you experience when you face the sun
  12. 19. Andromeda and Milky Way are examples of a: