Vocab 2

3. the straight or curved line an object follows under the influence of force or gravity.
4. the shape of orbit for planets
8. layer of glasses held in by gravity.
9. 6.6743 x 10^-11
11. The distance from the Earth to our sun
12. the number deciding how circular an orbit is.
13. the distance of a planet from the sun and the orbital period of the planet.
14. two imaginary lines in a ellipse that Cross at the center.
17. half of the longest diameter of and ellipse

1. the spin around something's orbit.
2. the natural physical force of attraction that pulls and two objects with mass together.
5. different points in the ellipse where a planets moves around.
6. shortest radius of an ellipse
7. a planet's spin around its axis
10. the curved path an object takes around another object in space.
14. when a planet is farthest from the sun in its ellipse
15. when a planet is closes to its sun in its ellipse orbit.
16. any object that rotates around a