Glaciers move because
A)the weight of snow causes compaction at the base and the formation of ice,which becomes plastic-like.
B)the gravitational pull on steep slopes causes avalanches that dislodge the snow accumulations.
C)the rotation of the earth holds the snowfields back,thereby forcing them to move.
D)tectonic forces from within the earth dislodge loose materials,such as great slabs of snow and ice.

Question

Quizplus · Accepted Answer

Glaciers move because of the weight of snow and ice causing compaction at the base, forming plastic-like ice that is able to flow and move downhill under gravity. The other options are either incorrect (B and D) or not directly related to glacier movement (C).

Glaciers Move Because