5th Grade Earth/Mars Vocab. and Ch. 8 Lesson 1 QUIZ REVIEW

Match it! Select the correct answer from the pull down...Good luck!

the path one object takes around another object

A force of attraction, or pull, between two objects

One complete trip around the sun

The outer part of something

Mars has 3 moons.

The study of the planets, stars, and moon

Which keep the Earth in its orbit?

The tendency of a moving object to keep moving in a straight line