The four main types of weathering include freeze-thaw, exfoliation, chemical and biological weathering. Weathering involves the process of rock breaking down into soil via various physical, biological and chemical reactions.Know More
The freeze-thaw method of weathering takes place when water penetrates small cracks in the rock and then freezes. When the water freezes, it expands, causing the crack in the rock to be placed under pressure and expand. The ending result is a break in the rock. The broken rock pieces can then break down further in the weathering process.
Exfoliation, also called onion skin weathering, involves the dramatic temperature changes on the rock. During the day, the rock is exposed to elevated temperatures, and at night, the rock is subjected to much cooler temperatures. This effect over an extended period of time results in a "flaking" effect on the rock.
Chemical weathering can take place in a rock when water, which seeps into the rock, contains amounts of acid, causing a chemical breakdown of the rock. This especially affects limestone, and it can be seen on buildings and other structures that are built with limestone rock.
Biological weathering involves effects from a living organism, such as a tree or moss. Tree roots can break rocks apart, and moss can break down the surface of a rock over a longer period of time.Learn more about Erosion & Weathering
Some different types of physical weathering are abrasion, salt crystallization, insolation, frost action and wetting and drying. Physical weathering is a geological process in which over time rock or mineral break apart. Abrasion occurs when two rocks are in contact, causing them to wear down over time through grinding.Full Answer >
The four types of erosion are sheet erosion, rill erosion, gully erosion and splash erosion. Erosion is defined as the withering away of the surface of land by either rain or irrigation water, wind or ice.Full Answer >
Weathering occurs when materials are eroded or broken down by natural means, such as ice, water and wind. Acid, plants and animals can also cause weathering.Full Answer >
The primary difference between weathering and erosion is that weathering refers to the erosion of natural substances without movement, while erosion includes movement of particles and surface materials. Weathering and erosion take place in the same locations and affect the same landforms, but erosion involves the movement of loosened particles and surface materials downwards via the force of gravity. Particles, such as small pieces of rock, sand and dirt dislodge during erosion, which requires a triggering force, typically wind, rain or ice.Full Answer >