physical weathering is weathering that you can reverse and chemical weathering is where you can' reverse it.
Water is a major component in weathering process. Its essential for all forms of disintegration either Mechanical/Physical, Biological or Chemical. Water aids in physical weathering through alternating wetting and drying of rocks thereby leading to breaking down of the rock. It helps in chemical weathering through dissolution of chemicals in rocks such as limestone. Water is a cause of both chemical and physical weathering.
Since igneous rocks form at high temperatures, and under pressure conditions ranging from one to several atmospheres. However, the conditions at the Earth's surface are somewhat different than the conditions at which most rocks and minerals form. Therefore, the materials are no longer at equilibrium when they are exposed to surface conditions. Under these conditions, there is a tendency for all ordered systems to seek lower levels of energy or order. This is all done through weathering. Weathering - the disintegration and decomposition of rock at or near the surface of the earth. It affects the rocks in place and no transport is involved. This distinguishes weathering from erosion.Mechanical/physical weathering - physical disintegration of a rock into smaller fragments, each with the same properties as the original. Occurs mainly by temperature and pressure changes.Chemical weathering - process by which the internal structure of a mineral is altered by the addition or removal of elements. Change in phase (mineral type) and composition are due to the action of chemical agents. Chemical weathering is dependent on available surface for reaction temperature and presence of chemically active fluids. Smaller particle sizes weather by chemical means more rapidly than large particles due to an increase of surface area. Look at the diagram below and you will see that as the particles get smaller, the total surface area available for chemical weathering increases.
How is differences in surface affect the adhesion f tape? Does the type of surface affect the adhesion of tape?
There are two main types of weathering: mechanical (also called 'physical') and chemical. Pressure release is a form of mechanical weathering. Pressure release usually occurs when rock that has been deeply buried, rises toward the surface due to the erosion of the mass of rock above it. Pressure release causes fractures and exfoliation in the depressurizing rock body. These fractures in the rock make it more susceptible to, and accelerate, other modes of mechanical weathering attack, such as freeze/thaw hydraulics and plant root growth.
A fossil could be destroyed by heat due to melting, pressure from colliding bodies of rock, or from weathering at the surface.
Physical weathering, such as cracks, creates more surface area for chemical weathering to occur on.
Physical weathering breaks big rocks into little rocks and increases the surface area exposed to chemical agents, such as carbonic acid. The more the surface area, the faster the weathering.
An example of physical weathering is animal actions and weathering is the process that breaks down rock and other substances of Earth's surface.
No. It makes more surface available for chemical weathering, actually speeding up the weathering process.
Basal Surface of Weathering is also known as the Weathering Front, which is the boundary between weathered and unweathered rocks.
weathering
PHysical
yes usually it is exposure to weathering i.e physical such as erosion and chemical weathering
The rate of weathering also depends on the surface area that is exposed. Mechanical weathering breaks rocks into smaller pieces. As the pieces get smaller, their surface area increases. When this happens, there is more total surface area available for chemical weathering. The result is that weathering has more of an effort on smaller particles.
Erosion, weathering
Physical weathering can affect peoples lives because, constant change in the air temperature can have effect on peoples house foundations as the surface moves due to phsical weathering.
Mechanical processes.