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Agents of mechanical weathering include ice, wind, water, gravity, plants, and even, yes, animals [us]!
✒Mechanical weathering is usually caused by extreme hot and cold temperatures. Water seeps into cracks in rocks, freezes, and expands, causing further breakdown of rocks. Wind is another example of mechanical weathering.
Weathering causes the disintegration of rock near the surface of the earth. Plant and animal life, atmosphere and water are the major causes of weathering. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice.
–Wind blowing rocks and water freezing in rocks both cause erosion too. Deposition is the dropping of sediment by wind, water, ice, or gravity. Sediment is created through the process of weathering, carried away through the process of erosion, and then dropped in a new location through the process of deposition.
the correct answer is (a) clouds.
Sedimentary rocks are formed on or near the Earth’s surface, in contrast to metamorphic and igneous rocks, which are formed deep within the Earth. The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.Oct 22, 2019
Types of Chemical Weathering. Several factors cause chemical weathering. These factors include water, oxygen, acids, carbon dioxide, and organisms that are living on Earth. These factors cause elements to break down and dissolve or create new materials.
The causes of mechanical weathering include freezing and thawing, release of pressure, plant growth, actions of animals, and abrasion. The term abrasion refers to the grinding away of rock by rock particles carried by water, ice, wind, or gravity. … Chemical weathering can produce new minerals as it breaks down rock.
– Weathering depends on water and temperature. – Mechanical weathering occurs fastest in areas that have a lot of temperature changes. – Chemical weathering is fastest where the climate is warm and wet, near the equator.
Abrasion. Abrasion is another type of mechanical weathering. … Gravity causes abrasion as a rock tumbles down a slope. Moving water causes abrasion; it moves rocks so that they bump against one another (Figure below).
Dissolving limestone is not a process of mechanical weathering. Mechanical weathering is the process which physically disintegrates rock. This would be defined as CHEMICAL weathering instead.
Pressure, warm temperatures, water, and ice are common causes of physical weathering.
Animals can also contribute to weathering. Animals can walk on rock or disturb it, causing landslides that scrape or smooth rock surfaces. Burrowing animals such as badgers and moles can break up rock underground or bring it to the surface, where it is exposed to other weathering forces.
Types of Chemical Weathering
In this question, the main cause of weathering is physical forces.
Climate. A region’s climate strongly influences weathering. Climate is determined by the temperature of a region plus the amount of precipitation it receives. … Since water participates in both mechanical and chemical weathering, more water strongly increases weathering.
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering.
Weathering is a natural process, but human activities can speed it up. For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere.
Example of weathering: Wind and water cause small pieces of rock to break off at the side of a mountain. Weathering can occur due to chemical and mechanical processes. Erosion is the movement of particles away from their source. Example of erosion: Wind carries small pieces of rock away from the side of a mountain.
(a) clouds. Weathering is the breaking down of huge pieces of rocks into smaller pieces by the action of natural forces such as water, glaciers, wind and roots of plants. …