Gravitation and Kepler's Laws

Edit Answers
12345678910111213141516171819
Across
  1. 3. Formulated the law of universal gravitation
  2. 6. Eccentricity can range from zero to _____.
  3. 7. This model of the universe showed the Sun at the center of the Solar System with the planets orbiting it.
  4. 11. This unit of distance is equal to Earth's average distance to the Sun.
  5. 15. The measure of how elongated an ellipse is.
  6. 16. The point of a planet's orbit when it is closest to the sun.
  7. 17. Earth is closest to the Sun on the 3rd day of this month.
  8. 18. The point of a planet's orbit when it is furthest from the Sun.
  9. 19. Every ellipse has two of these, and the Sun is always located at one of them.
Down
  1. 1. According to Kepler's Third Law, the further a planet is from the sun, the _________ its orbital period will be.
  2. 2. Planets travel _______ when they are at a point in their orbit that is far from the Sun.
  3. 4. The shape of all planets' orbits according to Kepler's First Law
  4. 5. This "planet" (if you say so) has a greater eccentricity than any of the planets' orbits.
  5. 6. The amount of time it takes for a planet to travel around the Sun
  6. 8. The law of equal _____ states that an area swept out by the line between a planet and the Sun is always equal no matter where it is in its orbit.
  7. 9. Gravitational force is affected by this, the amount of matter in objects.
  8. 10. Earth is furthest from the Sun on the 4th day of this month.
  9. 12. This model of the universe had Earth in the center of everything with everything else revolving around it.
  10. 13. Wrote two books that included the 3 Laws of Planetary Motion
  11. 14. Gravitational force is also affected by this, the measurement of how far apart objects are.