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Erosion and Weathering

Erosion is the physical movement of rocks and soil and weathering is the chemical breakdown of rocks. Both natural processes can change earth's landscapes greatly.

5,026 Questions

Why does weathering take so much time?

Weathering is the process by which rocks are broken into smaller pieces. This takes a long time because it uses the weather and other natural recources to break them up.

Why Norfolk is so susceptible to coastal erosion?

Norfolk is susceptible to coastal erosion due to its low-lying topography, high levels of tidal and wave action, and soft sedimentary geology. Climate change and rising sea levels also exacerbate erosion along the Norfolk coastline. Human activities such as coastal development and drainage can further contribute to erosion by disrupting natural sediment processes.

Why do plants keep soil from eroding?

Plants help prevent soil erosion by binding the soil with their roots, creating a stable structure. The plant roots also help absorb water, which reduces water runoff and erosion. Additionally, the leaves and stems of plants provide a physical barrier that slows down the movement of water over the soil surface, further preventing erosion.

How can water and ice cause erosion?

A far more quick and noticable type of water erosion is Freeze Thaw weathering.

Small amounts of water find tiny gaps in the rock. overnight, when the water freezes and becomes ice, the pressure forces the crack to slighty open up. This process repeats itself until the rock splits in half or crumbles away

What main process forms sea caves in softer rock?

Sea caves are formed through coastal erosion. The main process is the Hydraulic Action of the waves acting on the rock, resulting in erosion. Specifically, the waves act not only through their own sheer force, but also by forcing tiny air bubbles into the cracks, forcing them to expand that way too. Overall, therefore, it is very successful. The softer rock erodes quicker than the harder rock, causing it to recede quicker.

How the human activities soil erosion?

People have been the main cause of worldwide erosion since early in the first millennium, said Bruce Wilkinson, a U-M professor of geological sciences. Wilkinson will present his findings Nov. 8 at a meeting of the Geological Society of America in Denver, Colo.

Many researchers have tried to assess the impact of human activity on soil loss, but most have only guessed at how erosion due to natural forces such as glaciers and rivers compares with that caused by human activity---mainly agriculture and construction, Wilkinson said. He used existing data on sedimentary rock distributions and abundances to calculate rates of natural erosion.

"If you ask how fast erosion takes place over geologic time---say over the last 500 million years---on average, you get about 60 feet every million years," Wilkinson said. In those parts of the United States where soil is being eroded by human agricultural activity, however, the rate averages around 1,500 feet per million years, and rates are even higher in other parts of the world. Natural processes operate over areas larger than those affected by agriculture and construction, but even taking that into account, "the bottom line is, we move about 10 times as much sediment as all natural processes put together," he said.

Because soil formation proceeds at about the same rate as natural erosion, Wilkinson's results mean that humans are stripping soil from the surface of the Earth far faster than nature can replace it

Would Earth's surface be different without weathering and erosion?

Yes, without weathering and erosion, Earth's surface would look significantly different. These processes help shape our landscapes by breaking down rocks and transporting sediments, creating features like mountains, valleys, and coastlines. Without them, much of Earth's surface would remain unchanged over time.

What are some examples of erosion and deposition?

for erosion it would sediment transporting by water and for deposition would be sand dunes cause wind can carry sediment and deposits on the sand dune the forces that sediment can be carry is throught wind, water, ice, and gravity. I hope this helps you :D

How do humans intervene with weathering and erosion?

Well on the beaches there's smalls sand dunes and they say not to step on them, that's cause for deposition to make a sand dune takes long time and when someone steps on them thy are destroyed the sand dune i hope this :D

What does stone wind cause?

Stone wind can cause erosion by gradually wearing away rock and soil surfaces over time. It can also lead to the formation of unique rock features such as hoodoos and ventifacts, which are sculpted by the abrasive action of wind-blown particles. Additionally, stone winds can transport and deposit sediment in other areas, contributing to the overall process of sedimentation.

What example is given for explaining how rainwater can cause weathering?

An example of how rainwater can cause weathering is through a process called chemical weathering. Rainwater, which is slightly acidic due to carbon dioxide in the atmosphere, can dissolve minerals in rocks over time. This can weaken the rocks and lead to their eventual breakdown and erosion.

Is wetting and drying a part of mechanical weathering or chemical weathering?

Wetting and drying is considered a part of mechanical weathering. This process occurs when rocks expand when wet and contract when dry, leading to the breakdown of rock material.

What are three practices used to control soil erosion?

1- Shelter Belts. (Planting trees or rows of trees to stop wind erosion.)

2- Strip cropping. (Seeding fields in strips and only cultivating the unseeded strips to avoid erosion of the whole field.)

3-Zero-tillage farming. (Using zero-til seeding implements to avoid tillage of the land, thus avoiding wind and soil erosion.)

What is rate of deposition?

The rate of deposition refers to the speed at which particles settle out of a fluid onto a surface. It is usually measured in terms of mass or volume per unit area per unit time. Factors that can affect the rate of deposition include particle size, fluid velocity, and surface properties.

What does erosion mean for kids?

Erosion is when rocks, soil, and sand are gradually worn away by natural forces like water, wind, and ice. It can create valleys, canyons, and other landforms over a long period of time.

What is the agent of erosion for creep?

there are actually five types. water, wind, waves, glaciers, and gravity.

What is collagen deposition?

Collagen deposition is the process by which collagen fibers are laid down in tissues as part of the wound healing process or to help repair and strengthen tissues. Collagen is a key component of connective tissues and is essential for providing structure and support to the body.

How does weathering affect a rocks density?

Weathering can increase a rock's density by compacting it through processes like dissolution, which removes less dense components. On the other hand, weathering can also decrease a rock's density by causing it to break apart and creating pore spaces that decrease overall density. Ultimately, the impact of weathering on a rock's density depends on the specific types and rates of weathering processes at play.

How does elevation affect the weathering process of a rock?

Higher elevations generally experience greater temperature fluctuations, which can lead to more frequent freeze-thaw cycles that contribute to physical weathering of rocks. Increased elevation can also result in higher precipitation levels, which can accelerate chemical weathering processes by promoting the breakdown of minerals in rocks. Additionally, high elevations may experience stronger winds that can erode rock surfaces more quickly.

What is erosion and how does it affect the lithosphere?

Erosion is the process of wearing away rocks and soil by natural forces like water, wind, and ice. It affects the lithosphere by breaking down and carrying away sediment, leading to the shaping of landscapes and the formation of features like valleys and canyons. Over time, erosion can alter the surface of the lithosphere and contribute to the movement of material across the Earth's crust.

Do weathering erosion and deposition occur on the moon?

Weathering and erosion do not occur on the Moon due to lack of atmosphere and liquid water. However, there is some deposition due to impact events from meteoroids and micrometeoroids that create craters and affect the surface.

Is wind another force that causes weathering true or false?

True. Wind is a significant force of weathering that can cause erosion by carrying and depositing particles on Earth's surface. Over time, wind can wear away rocks and other materials, shaping the landscape.

Do glaciers move material over a long distance?

Yes, glaciers can move material over long distances by picking up debris as they flow downhill. This material can range in size from tiny particles to large boulders, and as the glacier moves, it can deposit this material in different locations as it melts or retreats, forming moraines and other glacial landforms.

Does moving water erode land?

Any type of erosion is a cause for international concern, water and wind are the two primary causes accounting for more than 80% of the problem. Water erosion includes river and streams, rainfall, coastal erosion, freezing and thawing, glaciers and floods. Moving water erodes the land

Is a floodplain a result of deposition?

Yes, a floodplain is typically formed as a result of deposition of sediment carried by a river during periods of frequent flooding. Over time, the repeated deposition of sediment leads to the formation of a flat, low-lying area along the riverbanks known as a floodplain.