Q35
The planets are kept in motion in their respective orbits by ________
A.
Their great size and spherical shape
B.
The rotation and density
C.
Gravitation and centrifugal force
AnswerD.
Rotation of the sun on its axis
Answer: Option C
Solution
Answer: Option C
Solution:
The planets are kept in motion in their respective orbits by Gravitation and centrifugal force. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.