Lesson 10- Earth's motions (use the decimal points & numbers)

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Across
  1. 4. A day is added to this year to make up for the extra six hours in a revolution
  2. 5. This motion changes the north star.
  3. 7. It also called the vernal equinox. _____ equinox
  4. 8. Earth's rotation takes this amount of time.
  5. 9. Nutation changes Earth's tilt up to this amount.
  6. 11. The length of the cycle for nutation
  7. 12. How far over does the earth's axis tilt?
  8. 15. How long 1 Precession takes.
  9. 16. Our current north star
  10. 17. This happens to the south and north pole because the Earth rotates.
Down
  1. 1. It also called the autumnal equinox. _____ equinox
  2. 2. This Earth motion happens because mainly because of the moon's tilted orbit.
  3. 3. The moon's orbit is tilted this much.
  4. 6. This happens to the equator because the Earth rotates.
  5. 7. During this event, the Earth is tilted toward or away from the sun
  6. 10. In days, how long does one revolution last.
  7. 13. It is a synonym for orbit.
  8. 14. In years, how long does one revolution last