Astronomy Review

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Across
  1. 2. A type of planet that is gas/ice, colder, low density, and larger.
  2. 3. the direction that the sun tilts (NSEW)
  3. 4. A force that pulls objects towards each other
  4. 5. What number KKepler's law is all planets move in an eliptical
  5. 8. The path / shape the planets move around the sun
  6. 10. type of tides that are in a straight line creating a high tide.
  7. 11. the layer of th sun where fusion occurs
  8. 13. A day in spring or fall that has equal amounts of sun light
  9. 14. the sun is planet (answer: True or False)
  10. 16. A type of planet that is rocky, warmer, high density, and smaller
  11. 17. The way the Earth moves around it's axis
Down
  1. 1. the layer of the sun where radiation moves energy (_________ zone)
  2. 3. the number of planets
  3. 5. The third step in solar system forming, where nuclei combine to form a new nucleus
  4. 6. A day in winter or summer that is the longest or shortest due to the tilt of the Earth
  5. 7. What number Kepler's law is a planet's orbital period is proportional to the size of its orbit
  6. 9. The two reference points that help in drawing the ellipse
  7. 10. What number Kepler's law is a planet covers the same area of space in the same amount of time no matter where it is in its orbit
  8. 12. The way the Earth moves around the sun
  9. 15. type of tide that are perpendicular line creating low tides