As the polar icecaps melt, the resulting water spreads over the entire Earth. This new mass distribution tends to make the length of a day
A)longer.
B)shorter.
C)none of these

Question

Quizplus · Accepted Answer

The melting of polar icecaps causes the water mass to redistribute over the Earth's surface. This leads to an increase in the Earth's moment of inertia which in turn causes the length of a day to increase, i.e., become longer.

As the Polar Icecaps Melt, the Resulting Water Spreads Over