Weathering, Erosion, & Deposition

Weathering, Erosion, and Deposition

Weathering (Chemical Weathering)

Chemical Weathering- The erosion or disintegration of rocks, due to chemical reactions.

The types are dissolution, rusting, water, and acids.Dissolution is when some rocks dissolve completely due to exposition of rainwater, rusting is when rocks are exposed to rainwater, they change to a different shade, water is when some minerals react with water and acid to take up hydrogen. The last one, acid, is when carbon dioxide in the air dissolves in rain, and a weak acid is formed.

Weathering (Mechanical Weathering)

Mechanical/Physical Weathering- The process of breaking big rocks into little ones.

The types of mechanical weathering include frost wedging, mechanical exfoliation, and abrasion.Frost wedging is when the water expands in the cracks of the rocks, freezing and breaking it apart.Mechanical exfoliation is when rocks break apart in layers that are parallel to the Earth's surface.Finally, abrasion is when there is physical grinding, or breaking apart due to movement of each other, of the rock fragments.

Some pictures of the process


The 5 main types of erosion

Water Erosion- When the water wears away at the rocks on the side of the river.

Wind Erosion- When the wind carries light fragments and makes them hit other land forms.

Glacier Erosion- A combination of wind, water, sediment, and glaciers smooth out rocky platforms and terrains.

Sea Erosion- The salts and other chemicals in the ocean wear away at weak rocks near the coast.

Soil Erosion- Flooding, wind, and other harmful ways of erosion can easily wipe out crops and farms, taking away the topsoil, leaving the soil unfertilized.

Deposition & The Five Main Types

Wind- The wind carries out light fragments of rock and lands it somewhere else.

Water- Water flows the rocks to a different place along the coast.

Ice- Ice can transport different fragments along with sediment helping it carry, for example, the bigger the glacier, the more the sediment, and the more it can carry.

Waves- Waves will carry most rocks/sand back to where they were or to a different place on the ocean floor.

Gravity- Gravity works with wind as the wind carries the fragments and gravity brings the fragments down.Gravity also keeps the fragments on the ground.