Earth and the Universe

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Across
  1. 2. Half of the Earth is in the shade. There it is ___________.
  2. 4. Earth takes one whole ________ to go round the sun.
  3. 6. There are four of these and they change during the year.
  4. 8. The Earth is one of the ________ in our solar system.
  5. 11. The time when there is natural sunlight.
  6. 12. The path of Earth around the sun.
Down
  1. 1. All the planets go around the sun but it does not _________.
  2. 3. For the Earth to spin on itself it takes ________hours.
  3. 5. Earth spins on this invisible line.
  4. 7. It is the biggest object in our solar system.
  5. 9. After four years we have to add a day. This is called ____ year.
  6. 10. How many planets are in our solar system.