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Types of Erosion
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Types of Erosion
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What is Erosion?
What is Erosion?
Erosion is a process where natural forces like water, wind, ice, and gravity move pieces of earth like rocks, sand and soil. Erosion is one way that the Earth's surface changes over time.
Erosion by Wind
Wind erosion occurs when wind moves pieces of earth like sand, soil or rock.
Small pieces of earth are carried away by the wind or the wind causes pieces of earth to collide and break off more pieces of earth.
Erosion by Wind
Erosion by Water
Erosion by water is one of the most powerful forces on the planet. It causes more erosion than any other force.
Erosion by Water
The Grand Canyon was made as a result of millions of years of water erosion.
Rainfall
Rainfall
Rainfall can cause erosion in two ways.
- First is when it hits the Earth's surface, called splash erosion.
- The second is when rain starts to form small stream that wash away pieces of earth.
Rivers
Rivers
The constant flow of a river can create erosion over time. The water picks up pieces of earth from the river bed or river bank and deposit them down stream.
Waves
Waves
Ocean waves move pieces of earth to and from the coastline. This can cause minor changes like moving sandbanks or significant change like creating caves or arches in headlands.
Floods
Erosion happens rapidly during floods. The excess water can move pieces of earth from river beds and river banks to flood plains or further down river.
Floods
Erosion by Ice
Ice erosion happens when a glacier moves downhill. As the ice of the glacier moves downhill, it pushes and pulls earth materials along with it. Glaciers can move very large rocks.
Erosion by Ice
What is a glacier?
A glacier is a large area of thick ice that remains frozen all year. Glaciers also slowly flow over the land.
Erosion by Gravity
Erosion by Gravity
Gravity erosion is the simplest kind of erosion. Gravity simply pulls loose earth materials downhill. Landslides are dramatic examples of gravity erosion.