Question

Which phrases describe all the outer planets’ motion? Check all that apply.
no rotation

fast rotation

slow revolution

opposite revolution

north to south rotation

Answer 1

opposite revolution

Answer 2

All planets seem to move along the ecliptic but from time to time they seem to slow down or even reverse at some times.

This is known as the retrograde motion.

At imes when Earth crosses the outer planets, it seems to move in a reverse direction and that is also known as Opposition to the sun.

Therefore, ecliptic, retrograde and opposition are the types of motion of outer planets.