Formation of the solar system vocab

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Across
  1. 4. establishes a relationship between a planet's orbital period and its distance from the Sun
  2. 6. model that says Earth is at the center of the universe with celestial bodies orbiting around it
  3. 7. a rotating cloud of gas and dust
  4. 10. Geometric shape of planetary orbits, characterized by two foci and varying eccentricity
  5. 11. planets orbit the Sun in elliptical paths, with the Sun at one focus of the ellipse.
Down
  1. 1. placing the Sun at the center of the universe
  2. 2. Measure of how elliptical an orbit is, ranging from 0 (circular) to 1
  3. 3. model that says that as a molecular cloud collapses toward a single point, pre-existing motion within the cloud will cause the collapsing mass to begin rotating and then flatten with a central bulge
  4. 5. nebular debris clumped together
  5. 6. Jupiter, Saturn, Uranus, Neptune; made of Helium and Hydrogen
  6. 8. formed closer to the Sun from denser materials, Mercury, Venus, Earth, Mars
  7. 9. planets move faster when closer to the Sun and slower when farther away,