A person weighs less at the equator than at the poles. The main reason for this has to do with
A) the law of action and reaction.
B) the influence of the sun, moon, and all the planets.
C) the spin of the Earth.
D) the shape of the Earth.
E) both the spin of the Earth and the shape of the Earth.

Question

Quizplus · Accepted Answer

The main reasons a person weighs less at the equator than at the poles are due to the spin of the Earth and the Earth's shape. The Earth's rotation causes a centrifugal force that is greatest at the equator, slightly reducing the effect of gravity. Additionally, the Earth is an oblate spheroid, meaning it is slightly flattened at the poles and bulges at the equator. This shape causes objects at the equator to be farther from the Earth's center, experiencing a slightly weaker gravitational pull compared to the poles.

A Person Weighs Less at the Equator Than at the Poles