How does the movement of water cause weathering and erosion? Give two examples of how Earth's surface is changed from the movement of water. Include the size of the area affected by the change and the timescale in which the change takes place for both examples.
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Answer:
how does the movement of water cause weathering and erosion?
The intense pressure at the base of the glacier causes some of the ice to melt, forming a thin layer of subglacial water. This water flows into cracks in the bedrock. As the water refreezes, the ice acts as a lever loosening the rock by lifting it.
Give two examples of how Earth's surface is changed from the movement of water. Include the size of the area affected by the change and the timescale in which the change takes place for both examples.
As the climate warms and sea ice melts, more of the sun's energy is absorbed by ocean water. As this heat is transferred to the land, the permafrost (frozen soil) thaws, making the coast vulnerable to erosion from wave action and storms (which are more frequent due to warmer temperatures and open water).
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