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a boundary line between land and water


an area of sand sloping down to the water of a sea or lake

longshore current

a water current that travels near and parallel to the shoreline


The movement of sand or other sediments by short jumps and bounces that is caused by wind or water


a decrease in the general price level of goods and services


the wearing down of rock particles by friction due to water or wind or ice


a ridge of sand created by the wind


a fine-grained unstratified accumulation of clay and silt deposited by the wind


a large ice mass that moves slowly down a mountain or over land


a large floating mass of ice, detached from a glacier and carried out to sea.


A deep crack or fissure in the ice of a glacier.

glacier drift

the rock material carried and deposited by glaciers

stratified drift

rock material that has been sorted and deposited in layers by water flowing from the melted ice of a glacier


the mixture of sediments that a glacier deposits directly on the surface

mass movement

the downhill movement of rock and soil because of gravity

rock fall

a group of loose rocks that fall down a steep slope


a slide of a large mass of dirt and rock down a mountain or cliff


The rapid downhill movement of a mixture of water, rock, and soil.


the very slow downhill movement of rock and soil.

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