Weathering And Erosion

798 Words4 Pages
Weathering and erosion are two processes that sort of shape Earth’s ground and rocks. Weathering is either a mechanical or chemical process that breaks down or shapes rocks, while erosion transports the leftovers of weathering, away. Understanding these processes helps us understand the way lakes, rivers, mountains, shorelines, canyons, and all sorts of other things were formed. For example the Grand Canyon was formed by erosion created from the Colorado River. It is very important to understand how these forces occur to understand the subject completely.
We’ll first start off with discussing weathering. There are two types of weathering processes, one being Physical Weathering and the other being Chemical weathering. Physical Weathering occurs when rocks are
…show more content…
Frost wedging, plant growth, abrasion by (wind, water, and gravity), thermal expansion, exfoliation, and even animals are agents of physical weathering. Frost wedging occurs when water flows into cracks in rock and then it freezes. When water freezes its volume increase for about 10%, meaning it expand between the rocks. When it expands it pushes and widens against the rock it either splits the rock apart or causes smaller part of the rock to break off. Plants’ roots can also into a rock’s cracks. The growth of the plant causes the roots to create more and more pressure on the rock, eventually causing that part of the rock to break off. Abrasion is the physical grinding of rock fragments. Abrasion can be cause by water, wind, and gravity. The water can carry rocks while moving and cause them to scrape against other rocks, wind can move with tiny sediments that will scrape against large rocks causing small parts of the rock’s

More about Weathering And Erosion

Open Document