Erosion
What is erosion?
Soil erosion is the geological process which earthen materials are worn away and transported by natural forces such as wind or water.
What are types of erosion?
Physical and chemical erosion.
What is the major agent of soil erosion on earth?
Liquid.
What is soil erosion?
Soil erosion refers to the erosion of the layer of dirt known as topsoil, the fertile material vital to life.
What is gully erosion?
Gully erosion is the stage in which soil particles are transported through large channels.
What is the similar process to erosion but does not involve movement?
Weathering.
What is physical erosion?
Physical erosion describes the process of rocks changing their physical properties without changing their basic chemical composition.
What are the four types of erosion caused by rain?
Splash erosion, sheet erosion, rill erosion, and gully erosion.
What does the rate of soil erosion depend on?
The rate of soil erosion depends on many factors, including soil’s make up, vegetation, and the intensity of wind and rain.
What is valley erosion?
Valley erosion is the process in which rushing stream and rivers wear away their banks, creating larger and larger valleys.
What is the opposite of erosion?
Deposition.
What is chemical erosion?
Chemical erosion occurs when a rock’s chemical composition changes, such as when iron rusts or when limestone dissolves due to carbonation.
What is splash erosion?
Splash erosion describes the impact of a falling raindrop, which can scatter tiny soil particles as far as 6 meters.
How does deforestation lead to soil erosion?
When trees are cleared away, the land is left to exposed wind and rain without the security of roots to prevent the soil from being swept away.
What is coastal erosion?
Coastal erosion is the wearing away of rocks or sand on beach and can change the shape of the entire coastline.
How is most erosion performed?
It is performed by liquid water, wind or ice.
What is bioerosion?
Bioerosion is the plant growth contribution to physical erosion.
What is sheet erosion?
Sheet erosion describes erosion caused by runoff.
Why is climate a major driver of soil erosion?
Changes in rainfall and water levels can shift soil, extreme fluctuations in temperature can make topsoil more vulnerable to erosion.
What is thermal erosion?
Thermal erosion describes the erosion of permafrost along a river or coastline
What is the transported material of soil erosion called?
Sediment.
What is an example of bioerosion?
Marine bioerosion.
What is rill erosion?
Rill erosion describes erosion that takes place as runoff develops into discrete streams called rills.
Give one impact of soil erosion?
Soil erosion decreases soil fertility.
What is erosion control?
Erosion control is the process of reducing erosion by wind and water.