Question

The earth is an oblate spheroid. Give reason

Answer 1

Earth is an oblate spheroid due to centrifugal force generated by rotation of the earth.

Explanation:

• Though ,earlier the earth was considered to be perfectly round.

• It was Isaac Newton who first proposed that the  Earth was not a perfect round.

• On the basis of his observations ,he suggested it was an oblate spheroid.

• An oblate spheroid refers to a sphere that is flattened at its poles and buldges at the equator.

• His observation was proved to be right.

• As, because of this bulge, the distance from Earth's center to sea level is roughly 21 kilometers which is  greater at the equator than at the poles.

• Earth bulges at the equator as a result of the centrifugal force due to rotation.

• The radius of Earth at the equator is 6,378 km and at the poles is slightly less at about 6,357 km.

Answer 2

Answer:

Explanation:The Earth is an oblate spheroid because it is slightly flattened at the poles and bulged at the Equator.