What happens to the land surface when large ice sheets melt away?
A)It subsides because there is less ice on top.
B)The land surface remains unchanged but seems lower because of the loss of ice.
C)The land flexes upward due to isostatic rebound.
D)The land rises because the rocks are warmer without the ice.

Question

Quizplus · Accepted Answer

When large ice sheets melt away, the land underneath them experiences isostatic rebound. This is because the weight of the ice pushes down on the land, causing it to sink. When the ice melts, the weight is lifted, and the land slowly rises back up to its original position. This process can take thousands of years and can cause changes in sea level and coastal landforms.

What Happens to the Land Surface When Large Ice Sheets