Erosion of rocks

Thursday, April 9, 2020

What is the erosion of rocks?

How was this cave carved out of solid rock? 

cave showing erosion

Weathering and erosion worked together to create the cave.

Weathering breaks the rock down then erosion carries this rock away

Erosion happens when rocks and sediment are picked up and moved to another place by the water, wind, ice, and even gravity. Erosion can occur slowly over time like a sand dune or quickly like a flood.

There several methods of erosion.

Remember, weathering breaks down the rock, and erosion moves the rock away

Rainfall can cause erosion and wash sediment away

Valley erosion occurs when rushing streams and rivers move rocks and sediment downstream. 

Oceans are a huge force of erosion.

Wind can cause erosion. 

Here are a couple more agents of erosion.

A dust storm can be a huge force of erosion.

dust storm

Ice and glaciers erode rock. 
Greenland and Antarctica have huge glaciers that move rock from one area to another.

Remember  Weathering breaks down rock and erosion moves this rock away.

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