How do the seasons change?

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Across
  1. 2. The ________ revolves around the Earth.
  2. 4. A ________ is a very large ball of burning gas in space.
  3. 5. _________ begins at the equinox in September.
  4. 6. The ________ revolves around the sun.
  5. 7. The _______ is when the day and night are the same amount of hours.
  6. 8. The longest day of the year is during the summer ________.
Down
  1. 1. The Earth is a _________.
  2. 3. When it is summer in Spain, it is _______ in Australia.
  3. 4. _________ begins at the equinox in March.
  4. 5. The Earth spins on an _______.
  5. 6. The ________ separates the northern and southern hemispheres.
  6. 9. The _______ is the nearest star to the Earth.