The motion of the moon around the earth is due to the _____.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer: Option 1 (Centripetal Force)
Explanation:
The Moon's motion around the Earth is caused by centripetal force. This force is provided by the Earth's gravitational pull. Centripetal force is the force that acts toward the center to maintain an object in a circular path. If this force were not there, the Moon would drift off into space, moving in a straight line.
Analysis of Other Options
Magnetic Field: It is important for planetary protection and navigation, but it does not determine the planetary orbit.
Friction Force: Space is almost a vacuum, so there is no frictional force to oppose motion.
Acceleration: A change in velocity is called acceleration. Although the Moon is accelerating (because its direction is changing), the motion is caused by force, not acceleration.
Possible questions for the upcoming exam
What is the force acting toward the center on an object moving in a circular path called?
(Answer: Centripetal force)
What is the average distance between the Earth and the Moon?
(Answer: Approximately 384,400 km)
How long does it take the Moon to revolve around the Earth?
(Answer: Approximately 27.3 days)