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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 chemical weathering occurs more rapidly in a rain forest than it does in a desert?

Chemical weathering occurs more rapidly in a rainforest compared to a desert because of the higher temperatures, abundant moisture, and presence of organic acids in the soil of rainforests. These factors facilitate faster chemical reactions that break down rocks and minerals into smaller particles. In contrast, deserts have lower moisture levels and fewer organic acids, slowing down the chemical weathering processes.

What are 2 of nature's weathering forces?

Two of nature's weathering forces are mechanical weathering, which breaks down rocks into smaller pieces through physical processes like freezing and thawing, and chemical weathering, which alters the composition of rocks through reactions with water, oxygen, and other substances.

How do weathering erosion and deposition effect hill country?

Weathering breaks down rocks into smaller pieces, erosion transports these pieces downhill, and deposition deposits these pieces in lower-lying areas. In hill country, this can result in the gradual reshaping of the landscape, leading to the formation of valleys, slopes, and terraces over time.

Is weathering an explosive force that blows rocks apart?

No, weathering is a slow process that breaks down rocks into smaller pieces through exposure to factors like wind, water, and temperature changes. Explosive forces that can break rocks apart include events like volcanic eruptions or sudden shifts in tectonic plates.

Do tributarys form by erosion or deposition?

Tributaries form by erosion, as flowing water carves a path through the landscape to create a network of smaller streams that feed into larger rivers. Erosion plays a key role in shaping the landscape and developing the interconnected system of waterways that make up a watershed.

Where has erosion happened?

Erosion occurs all around the world, mainly in areas with exposed soil, steep slopes, and high rainfall. Common locations for erosion include river banks, coastlines, arid deserts, and deforested areas. Human activities like mining, agriculture, and urban development can also accelerate erosion.

What type of erosion accours on the outside bend of a river?

Lateral erosion, also known as undercutting, occurs on the outside bend of a river. This is where the force of the water is strongest, causing the river to erode the outer bank through hydraulic action and abrasion.

How do ice wedging pressure release plant root growth and abrasion cause mechanical weathering?

Ice wedging: When water freezes it expands, causing the rock it is on to crack or bust.

Plant root growth: A plants root can move a rock or pull AA rock up from the ground, exposing it to erosion (or also known as, surface area)

Abrasion: The act of something wearing down a rock by friction.

(Not too sure about pressure release)

How does waves cause soil erosion?

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Soil erosion is many things but, it is mostly the washing away of soil by the elements. Soil is naturally removed by the action of water or wind. Other causes of soil erosion can be plowing, deforestation, animal interference, and the land’s topography.

What is a deposition does it mean settlement?

A deposition is a legal process where a witness gives sworn testimony outside of court, usually as part of the pre-trial discovery phase. It does not mean settlement, as a settlement is a resolution of a legal dispute reached by the parties involved.

What takes place when minerals in rocks combine with air and chemical weathering?

When minerals in rocks combine with air and chemical weathering, they undergo a process where the minerals react with oxygen and water to form new minerals. This process can lead to the breakdown of the original rock minerals, resulting in the weakening and alteration of the rock structure over time.

What is abrosion?

Abrosion is a form of Weathering (Geology) by Rivers.

How does erosion affect people and animals?

Soil erosion is one of the most important source of pollution in today's mechanical world. Pesticides, chemical fertilizers are now a days increasingly used all around the world. Though there are advantages of use such chemicals in production wise their impact on human beings can not be neglected. Through the process of biomagnification they enter human body when soil erosion leads them to nearby closed water bodies thus it causes serious diseases like minamata, insomnia, cholera etc.

Does water affect rocks?

Yes, over time, water can erode rocks through processes like weathering and erosion. Water can seep into cracks in rocks, freeze, and expand, causing the rock to break apart. Additionally, water can chemically react with certain minerals in rocks, leading to their decomposition.

What are the 7 main causes of weathering?

There are many causes of weathering. Some of the main causes of weathering are:

  • Thermal stress
  • Frost weathering
  • Ocean waves
  • Pressure release
  • Salt-crystal growth
  • Biological effects

How does an increase in surface area affect the rate of weathering?

If you do a chalk experiment, you will find out that increasing the surface area speeds the rate of weathering. The reaction/weathering will happen quicker. Most people are doing this in science. Your welcome

What type of erosion is similar to using sandpaper to smooth the edges of wood?

Abrasion erosion is similar to using sandpaper to smooth the edges of wood. In this type of erosion, particles like sand or rocks are carried by wind, water, or ice and wear down the surface of rocks or other materials over time through friction and scraping.

What is erosion called mass movement is caused by?

Erosion called mass movement is caused by gravity pulling material downslope. This can include processes like landslides, slumps, and rockfalls where a mass of rock, soil, or debris moves downward due to gravity's force.

What is dropping of sediment after it is moved?

The dropping of sediment after it is moved is called sediment deposition. This process occurs when the energy of the water or wind carrying the sediment decreases, causing it to settle and be deposited on the ground or at the bottom of a body of water.

Are cirques formed by erosion or deposition?

Cirques are typically formed by erosion. These bowl-shaped depressions in the landscape are carved out by glaciers over time, as they move downhill and erode the surrounding rock through processes like freeze-thaw weathering and abrasion.

Is erosion harmful to the earth?

Erosion and weathering doesn`t harm Earth itself but materials. Rocks, sand, and soil are the most common materials eroded. Erosion can can rid of beaches because the sand erodes into the water and sand can disapear.

What are the five ways of mechanical weathering?

There are 5 ways Mechanical Weathering acts:

1.

Freezing and Thawing

2.

Release of pressure

3.

Plant growth

4.

Actions of Animals

5.

Abrasion

Are sea stacks caused erosion or deposition?

Sea stacks are primarily formed by erosion. They are created when the relentless force of waves erodes the weaker parts of cliffs and headlands, leaving behind isolated rock formations. As the land erodes, the sea stack is separated from the mainland, becoming a distinctive coastal feature.

How do erosion weathering and deposition work together.?

Erosion, weathering, and deposition are part of the same process where material is broken down and then moved from one place to another. Weathering breaks down rocks into smaller pieces, erosion transports these pieces to new locations, and deposition involves depositing these pieces in a new location. Together, these processes shape the Earth's surface over time.