Lesson 2: Gravity and the solar system.

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Across
  1. 3. The inward force that causes an object to move in a circular path is called ________.
  2. 6. It is made up of one star and eight planets.
  3. 7. The first law states that the planets move in an elliptical.
  4. 8. The center of our solar system. (A star)
  5. 9. The terrestrial and extra terrestrial planets are separated by the__________.
Down
  1. 1. The path that a body follows as it travels around another body in space.
  2. 2. The force that pulls objects closer to its core or center.
  3. 4. The point where the object is farthest from the sun.
  4. 5. The point where the object is closest to the sun.
  5. 6. The cloud from which the solar system formed 4.6 billion years ago.