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.

10,138 Questions
Geology
Erosion and Weathering

What are the differences between weathering and erosion?

Weathering is the breaking down of rock into smaller and smaller particles. Weathering processes include frost wedging, acid rain dissolution, root growth, wind particle abrasion, heat expansion cracking, hydraulic fracture, and rock tumbling in rivers and streams.

Erosion is the movement of weathered material from one place to another place through the agents of erosion: wind, water, ice, and gravity.


In tandem, weathering and erosion act to lower the high points, and raise the low points on the surface of the planet.

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Earth Sciences
Erosion and Weathering

How do you stop gravity erosion?

There are a number of different ways in which you could potentially prevent gravity-related erosion, but you could also take measures to prevent damage from the erosion too. To prevent the erosion in the first place, you could anchor the ground/boulders in place. In addition, you could totally remove particularly difficult boulders or overhangs, although this is more expensive. Prevention is always more expensive than protection.

To protect property from mass movement (landslide etc.), if the property is on top of the precarious rock, you can only anchor the rock, else move the property away (again, expensive). Another measure could be to build a large support structure, to mount dirt up by it, perhaps. To protect a property, or any communications or buildings for that matter, you can take a number of measures. The first is the most popular: a simple fence or wall built into the mountainside/ rock face. This is a cheap and quick solution. Another popular option is a ditch, but this is regularly difficult because the ditch must be dug into the rock, which is hard.

Other options include adding concrete structures into the rock to strengthen it, removing unconsolidated sediment (soil) from the rock face or top rock surface, and strengthening the buildings themselves. In the case of a road, you could also build a shelter as you would for an avalanche. Furthermore, it is important to monitor the earthquake activity in the area, so that one can be predicted.

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Botany or Plant Biology
Erosion and Weathering

Why are plants able to slow down soil erosion?

Plants help to check soil erosion considerably. During flood or excessive rain, the soil gets washed away by the flow of water. However, deep rooted plants help the soil not get washed away by the water pressure, thereby slowing down the process of soil erosion. Therefore, planting of deep rooted trees are advisable along the river shore.

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Farm Crops
Erosion and Weathering
Soil

Poor quality of crops when top soil is eroded?

There isn't too much you can do once top soil is lost but to replace it, but first address the erosion problem. Soil amendments may raise your crop quality some but nothing works better than good soil.

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Oceans and Seas
Coastlines
Erosion and Weathering

Why does the coastline change?

Erosion due to wave action and high/low tides.

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Definitions
Erosion and Weathering

What is the carrying away of weathered materials?

Weathered material may be moved by some form of transportation, which may include transportation through an agent of erosion, but may also include transportation through mass movement.

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Geology
Erosion and Weathering

What do both weathering and erosion produce?

New rocks, landforms and structures.

The first from the sediments from the weathered rocks. Also solutions of minerals such as calcium carbonate, from limestone.

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Erosion and Weathering
Rocks and Minerals

What are some types and examples of erosion?

Where the ocean and land meet is a constant erosion.

The beach!

My answer: The Grand Canyon is a good example. It used to have a river in it, and over a long period of time erosion and deposition combined to form it :)

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Law & Legal Issues
Federal Laws
History of Science
Erosion and Weathering

What did Hugh Bennett do on April 14 1935?

I don't know about April 14 - HOWEVER -- -

When the Soil Erosion Service was established as part of the United States Department of the Interior in September 1933, Bennett became the director. He continued to speak out on soil conservation issues, especially through the Dust Bowl years, and eventually influenced the passage of the soil conservation act of April 27, 1935, which created the Soil Conservation Service at the USDA.

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Astronomy
Erosion and Weathering

The only weathering and erosion on the Moon is caused by what that strike its surface?

There are two; sunlight, and meteoroids. Sunlight heats the lunar rocks to "fairly hot" during the day, and when the Sun sets, the rocks cool - and crack. 4 billion years of heat & cool cycles could cause quite a bit of breakage.

The other erosive factor is meteoroids. Since the Moon doesn't have an atmosphere to slow them down, rocks strike the Moon at orbital velocities; during meteor showers, the Moon is hit as much as the Earth is. NASA has created a movie of 100 strikes that were bright enough to be seen on Earth.

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Geology
The Difference Between
Erosion and Weathering

What is the difference between erosion and weathering?

Weathering is a process by which rocks and minerals are gradually broken down into smaller and smaller particles.

Weathering of rocks is caused by chemical and mechanical means. Slightly acidic rainwater can react with rock surfaces, dissolving them over time. Rocks can also be affected by organic sources of chemical reactants. Heat from the sun can cause differences in temperature between the surface and the interior of a rock which can cause a loosening of the surface called exfoliation. Liquid water penetrates cracks in the rocks surface where it can freeze and expand, opening up the cracks for further attack in tandem with acidic rainwater. Plant root growth can also cause cracks to further expand, making them more vulnerable to frost expansion and chemical attack. Underlying rock which is exposed due to erosion of the overlying rock becomes free of the pressure it was previously exposed to, causing the rock to expand and break apart. Other means of weathering include the expansion of crystallizing salts that have been taken in by a rock surface, expansion due to the absorption of water, and hydraulic action from crashing waves on seashore rock formations. Technically, erosion is a type of weathering. Weathering affects both color and size. It includes the affects of wind, rain, sunlight, freezing and heat. Erosion is water and wind wearing away objects like a like mountains and earth. Weathering is general wearing away from rain and wind, like jagged mountains gradually wear down to smoother and lower hills.
Weathering is when the rocks get broken down.

Erosion is when the little rocks get moved around.

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Erosion and Weathering
Rocks and Minerals

How can plants help stop soil erosion?

the roots help keep the soil steady and prevent them from falling into the water source

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Erosion and Weathering

How do weathering and erosion affect us?

It can create soil for crops. Hope this helped.

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Geology
Rain and Flooding
Erosion and Weathering

What is the difference between chemical and mechanical weathering?

Mechanical (physical) weathering is the breakdown of rock into smaller particles due to such factors as freezing and thawing, release of pressure, water absorption, salt crystal formation, landmass uplift, expansion and contraction from the sun or fire, plant root growth, actions of animals, abrasion, or other means that do not directly affect the rock's chemistry.

Chemical weathering is the dissolution, carbonation, oxidation, or hydrolysis of rock and mineral by chemical means only, mostly from reactions with water or the acids contained in rainwater. Other materials are formed in the process. Warm, tropical climates are ideal environments for chemical weathering to take place as the chemical reactions are quickened by the bountiful rain and warm temperatures.

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Geology
Science
Geography
Erosion and Weathering

What are 2 ways that waves erode land?

Waves erode through forcing air bubbles into tiny cracks in rocks (hydraulic action), and also by abrasion, whereby it causes rocks to be hurled against rock faces.

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Geology
Earth Sciences
Erosion and Weathering

What is differential erosion?

Differential erosion occurs when a geologic area was formed of both soft and weak rocks rocks, are harder, more resistant, rocks, weak rocks wear away first leaving behind knobs and cliffs of more resistant rocks.

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Geology
Earth Sciences
Erosion and Weathering

What is erosion?

Erosion is the wearing away of the surface of the earth!Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow, and then transported and deposited in other locations.

  1. the process of eroding or being eroded by wind, water, or other natural agents
  2. The gradual destruction or diminution of something: "the erosion of support for the party"
The wearing away of land or soil by the action of wind, water, or ice.

In hydrologic terms, wearing away of the lands by running water, glaciers,winds, and waves, can be subdivided into three process: Corrasion, Corrosion, and Transportation. Weathering, although sometimes included here, is a distant process which does not imply removal of any material

wearing away of rock or soil by the gradual detachment of soil or rock fragments by water, wind, ice, and other mechanical or chemical forces.the wearing away of the earth's surface by running water, wind, ice, or other geological agents; processes, including weathering, dissolution, abrasion, corrosion, and transportation, by which material is removed from the earth's surface

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Waterfalls
Erosion and Weathering

What effect does deposition have on waterfalls?

The effect that deposition have on waterfalls is the waterfall is really high so the energy in which it holds is much powerful that usual. The depths may vary according to the length of the waterfall, and how deep it is.

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Agriculture
Erosion and Weathering

How do farmers work to prevent wind erosion of topsoil?

The best proven method to prevent or minimize soil erosion is adopt no-till practices, or convert the fields to permanent pasture for livestock and rotational-graze them on there. Nature has long known that having plants cover every square inch of exposed soil will naturally reduce or prevent erosion of the soil.

Planting trees will only minimize wind erosion, it won't prevent it; you will still have soil exposed to the elements, and when you get powerful gusty winds that even the trees cannot break you will still get soil blowing away. Same thing with contour plowing--you're still exposing soil to the elements regardless if you're going with the lay of the land. Strong winds can still up and blow some of the topsoil away.

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Erosion and Weathering

How does erosion both hurt and help people?

Erosion hurt people since it can destroy the natural form of lands, it can alter the ecosystem, and outright loss of soil to people's land. It can help people in the agriculture, however, since erosion aids sedimentation thus it helps remove unnecesary rocks and other elements in the soil.

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US National Parks Reserves and Monuments
Grand Canyon
Erosion and Weathering

What caused the Grand Canyon?

The water erosion of the Colorado River over a very long period of time combined with slow but consistent uplift of the ground the river flowed through.

The Colorado River moved bits of rock around which made the GRAND CANYON.

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History of Science
Erosion and Weathering

What are some main agents of physical weathering?

Natural agents of physical weathering: Rain, sand (driven by the wind), sunlight, the freeze/thaw cycle. Man-made agents of physical weathering: Acid rain.

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Erosion and Weathering

How animals can cause weathering?

they walk around in one place to wear down earth or eat plants . plants won't be there to protect soil

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Mountains
Erosion and Weathering

How does wind erosion changes mountains?

When the wind blows across the mountian, it picks up little bits and pieces of sedimant and drops them in a different spot. Eventully the picked up sediment could build a new mountian, most of the time it take 100reds of years

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Erosion and Weathering

Where does coastal erosion occur the most?

It mostly happen in the Ocean

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