How do we get the four seasons?

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Across
  1. 5. If a thing is imaginary, it is not _____.
  2. 7. To _____ means to turn around and around in one place.
  3. 10. ___ ______ spins once every 24 hours.
  4. 11. The axis is an ________ line that goes through the middle/center of Earth from the north pole to the south pole.
  5. 12. When the sun shines more _______ on a hemisphere, it is summer in that hemisphere.
  6. 13. When it's winter in the southern hemisphere, it's summer in the ________ hemisphere.
Down
  1. 1. An imaginary line called the equator divides Earth into two __________s.
  2. 2. People, animals, and plants _____ _____ different seasons in different ways.
  3. 3. We get seasons because Earth's axis is _______.
  4. 4. Every three months, the seasons change because Earth is in a new ________ in its orbit around the sun.
  5. 6. The position of Earth in space tells us ________ it is.
  6. 8. The earth spins on its _______.
  7. 9. Every _______ is three months long.