The downhill movement of Earth material caused by gravity is called mass wasting. How steep a slope is will affect mass wasting. It can happen slowly, particle by particle, over years, or it can happen suddenly after a heavy rain or an earthquake.
The sediment is dropped off at the bottom of the hill or at places where the hill becomes less steep. The dropping off of sediment is called deposition.
Erosion and deposition work together.
Wind can blow sediment.
Flowing water carries loose particles of rock. The pieces of rock carried by moving water act like tiny drills. The pieces of rock erode the sides and bottom of the river. When the water slows down, some of the particles are dropped off.
A huge sheet of ice and snow that moves slowly over the land is called a glacier. Some glaciers form in valleys high up in the mountains. Others form near the poles. Glaciers form when more snow falls in the winter than melts in the summer.
The whole sheet of ice moves downhill. When a glacier moves over the ground, pieces of rock may freeze into the ice. Huge chunks of rock may be picked up and carried long distances.
Glaciers eventually reach places where it is warm, and they melt. When the ice melts, the rocks that were frozen into it fall to the ground. A jumble of many sizes of sediment deposited by a glacier is called a till.
A deposit of many sizes of sediment in front of or along the sides of a glacier is called a moraine. As the glacier melts away, the moraine is left as mounds or long ridges. Glaciers also form lakes.
And this is how is carry,lift and drop.
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