Many great rivers flow toward the equator. The sediments that they carry, increases the time of rotation of the earth about its own axis.
The angular momentum of the earth about its rotation axis is conserved.

Options

A. Statement I is True, Statement II is True, Statement ll is a correct explanation for Statement I.
B. Statement I is True, Statement II is True, Statement II is NOT a correct explanation for Statement I
C. Statement I is True, Statement II is False.
D. Statement I is False, Statement II is True.

Answer

A

Explanation

Sediment deposited at the equator (away from the axis of rotation) increases the moment of inertia (not mass) of the Earth. Since `Iomega=`constant, `omega` decreases and thus `I=2pi//omega` increases.