16. to move in a circle around a center
e.g.: Earth revolves around the sun,
the moon revolves around Earth
revolve
17. the path one body in space follows as it goes
around another body
One complete path around a body
e.g.: moon orbits Earth; planets orbit the sun
orbit
18. the spinning of an object on
its axis
Ex: Earth rotates on it’s
axis – 1 full rotation is 24
hours