The three main forces that cause erosion are water, wind, and ice. Water is the main cause of erosion on Earth.
To erode is defined as to gradually wear away, or to be gradually worn away. When water continually washes over soil and begins to wash away that soil, this is an example of a situation where the water erodes the soil.
Soft rock like chalk will erode more quickly than hard rocks like granite. Vegetation can slow the impact of erosion. Plant roots adhere to soil and rock particles, preventing their transport during rainfall or wind events.
Erosion is the process by which the surface of the Earth gets worn down. Erosion can be caused by natural elements such as wind and glacial ice. But anyone who has ever seen a picture of the Grand Canyon knows that nothing beats the slow steady movement of water when it comes to changing the Earth.
Erosion involved three processes: detachment (from the ground), transportation (via water or wind), and deposition. The deposition is often in places we don't want the soil such as streams, lakes, reservoirs, or deltas.
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Some erosion examples include wind erosion, water erosion, glacial erosion, temperature erosion, and mass wasting (such as landslides).
Chemical erosion, also called chemical weathering, causes the breakdown and decay or rocks or other geological features through a chemical process. This process can be the result of manmade activity, or the chemical composition of soil or water as it moves across the rock's surface.
The water erosion can further be classified as splash erosion, sheet erosion, rill erosion, gully erosion, ravines erosion, landslides or slip erosion, stream bank erosion. The wind erosion can be further classified as saltation, suspension and surface creep  .
Ice erosion occurs in one of two forms, the movement of glaciers, or thawing processes. In the latter formation, water inside pores and rock fractures expand, which causes further cracking. Glaciers erode through one of three different processes, including abrasion, plucking, and thrusting.
There are two types of erosion: intrinsic and extrinsic.
Wind erosion is a natural process that moves soil from one location to another by wind power. It can cause significant economic and environmental damage.
Ice causes erosion by a method known as freeze-thaw weathering.
As glaciers spread out over the surface of the land, (grow), they can change the shape of the land. They scrape away at the surface of the land, erode rock and sediment, carry it from one place to another, and leave it somewhere else. Thus, glaciers cause both erosional and depositional landforms.
Kettles form when a block of stagnant ice (a serac) detaches from the glacier. Eventually, it becomes wholly or partially buried in sediment and slowly melts, leaving behind a pit. In many cases, water begins fills the depression and forms a pond or lake—a kettle.
A horn results when glaciers erode three or more arêtes, usually forming a sharp-edged peak. Cirques are concave, circular basins carved by the base of a glacier as it erodes the landscape.
Glaciers cause erosion by plucking and abrasion. Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
An ice age is triggered when summer temperatures in the northern hemisphere fail to rise above freezing for years. This means that winter snowfall doesn't melt, but instead builds up, compresses and over time starts to compact, or glaciate, into ice sheets.
Glaciers deposit their sediment when they melt. They drop and leave behind whatever was once frozen in their ice. It's usually a mixture of particles and rocks of all sizes, called glacial till.
Wind generally causes erosion by deflation and/or abrasion. Wind breaks are often planted by farmers to reduce wind erosion. Abrasion is the process of erosion produced by the suspended particles that impact on solid objects.