during what season would you expect mass movements to be a greater threat?

During What Season Would You Expect Mass Movements To Be A Greater Threat??

Climate. During what season would you expect mass movement to be a greater threat? A wet spring before vegetation is growing.

What are the factors that commonly trigger mass movements?

Among the factors that commonly trigger mass movements are saturation of surface materials with water, oversteepening of slopes, removal of vegetation, and earthquakes.

Which is one of the most dramatic triggers of sudden mass movements?

Cards

Term what is mechanical weathering Definition the physical disintegration of rock, resulting in smaller fragments
Term one of the most dramatic triggers of sudden mass movements is a(n) Definition earthquake

What is the force behind mass movements?

Gravity is the main force responsible for mass movements. Gravity is a force that acts everywhere on the Earth’s surface, pulling everything in a direction toward the center of the Earth.

What is the mass movement that involves the sudden movement of a block of material along a flat inclined surface?

Cards

Term What is mechanical weathering? Definition When physical forces break rock into smaller and smaller pieces without changing the rock’s mineral composition.
Term A mass movement that involves the sudden movement of a block of material along a flat, inclined surface is called a ___. Definition Rockslides or a slide

What are the effects of mass movement?

Mass movements affect the following elements of the environment: (1) the topography of the earth’s surface, particularly the morphologies of mountain and valley systems, both on the continents and on the ocean floors; (2) the character/quality of rivers and streams and groundwater flow; (3) the forests that cover much …

What are some ways in which climate influences mass wasting?

Climate is based on temperature and precipitation. Mass wasting is prone in the spring-time when snow melt, water saturation, and runoff is greatest. Also the type of climate will help determine the type of mass wasting. Humid climates tend to have slides, where water-saturated slopes fail and fall.

Which mass movement poses the greatest risk to human life because it moves so quickly?

Mudslide poses the greatest risk to human life because it moves so quickly. Explanation: Mudslide is the gravity assisted movement of the debris.

Why can the removal of vegetation trigger mass movements?

Vegetation removal can trigger mass wasting. Vegetation stabilizes soil. When it is removed from a slope, the slope is vulnerable to water and wind erosion. Earthquakes can also play a role in mass wasting due to the violent shaking they cause.

Which type of mechanical weathering is most common in mountainous regions in the middle latitudes?

Ice wedging is common in Earth’s polar regions and mid latitudes, and also at higher elevations, such as in the mountains. Abrasion is another form of mechanical weathering. In abrasion, one rock bumps against another rock.

How does mass movement occur?

mass movement, also called Mass Wasting, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction.

What causes mass movement quizlet?

Gravity causes mass movement. Types of mass movement: landslides, mudslides, slump, and creep. The most destructive kind of mass movement is a landslide, which occurs when rock and soil slide quickly down a steep slope.

What is mass movement in history?

an organized effort by a large number of people, especially those not forming part of the elite of a given society, to bring about pervasive changes in existing social, economic, or political institutions, frequently characterized by charismatic leadership.

Which weathering process would you expect to have the greatest effect within the tropics?

In general, hot wet climates accelerate chemical weathering while cold dry climates accelerate physical weathering. Although the rate of weathering depends on the type of rock, rocks in tropical climates experience the highest rates of weathering because of the combination of high heat and heavy rainfall.

What is the process that occurs when physical forces break?

Mechanical weathering – occurs when physical forces break rock into smaller and smaller pieces without changing the rock’s mineral composition. Mechanical weathering – occurs when physical forces break rock into smaller and smaller pieces without changing the rock’s mineral composition.

Which weathering process involves physical forces?

Mechanical weathering, also called physical weathering, breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition.

What are some devastating results of faster mass movements?

Mass movements can be very dangerous because they can happen very quickly and involve entire hillsides. Sometimes a mass movement will dam a river. A lake will form behind the dam. When the dam bursts, the lake will drain causing catastrophic flooding.

What are the harmful effects of mass wasting?

It is ubiquitous but tends to be most effective in mountainous areas, and plays a considerable role in the geomorphic evolution of a landscape. Depending on the nature of the mass wasting process, it can also present a significant hazard in the form of landslides, slope failures, and avalanches.

What would you suggest the government should do to minimize the devastating effects of mass wasting?

Mass movement control must be primarily preventive: e.g., mapping vulnerable zones, drawing up a land use plan, banning building work or any modification of slopes, and protection in the form of coppice forests.

What are the 4 factors that influence mass wasting?

Mass wasting is influenced by slope, material strength, water content, and amount of vegetation. Mass wasting can be triggered by storms, earthquakes, eruptions, and human activity. Fall, slide, flow, and creep are the main categories of mass wasting mechanisms.

How the climate and weather of the earth is being adversely affected?

More frequent and intense drought, storms, heat waves, rising sea levels, melting glaciers and warming oceans can directly harm animals, destroy the places they live, and wreak havoc on people’s livelihoods and communities. As climate change worsens, dangerous weather events are becoming more frequent or severe.

Which of the following mass movements poses the greatest risk to human life a slump a mudflow or an Earthflow?

Mudflows, earthflows and slumps can be all dangerous. However, the most dangerous are mudflows. The reason lies in the fact that mudflows can activate very fast, they can cover greater distances, they can carry a lot of debris which was triggered by heavy rainfall or snow melting.

Slump moves materials as a large block along a curved surface (figure 7). Slumps often happen when a slope is undercut, with no support for the overlying materials, or when too much weight is added to an unstable slope.

What best describes a mudflow?

A mudflow or mud flow is a form of mass wasting involving “very rapid to extremely rapid surging flow” of debris that has become partially or fully liquified by the addition of significant amounts of water to the source material.

Does vegetation prevent mass movement?

Trees and root columns can prevent shallow mass movement through acting as piles when there is buttressing and soil arching through a woody deep root system which has multiple sinker roots with embedded stems and laterals.

What are the effects of mass wasting to Earth’s landscape?

In addition to falls, landslides, flows and creep, mass wasting processes also contribute to the erosion of landscapes in areas prone to permafrost. Because drainage is often poor in these areas, moisture collects in soil. During the winter, this moisture freezes, causing ground ice to develop.

What are the controls and triggers of mass wasting?

Steep slopes, widely varying altitude ranges (relief), the thickness of the loose earth material, planes of weakness parallel to the slopes, frequent freezing and thawing, high water content in the earth material, dry conditions with occasional heavy rainfall, and sparse vegetation are the factors that contribute to …

How does the sun cause mechanical weathering?

Forms of Mechanical Weathering

As rocks expand and contract, the heat creates a physical weathering process where the rock splits apart into fragments. It also contributes to chemical weathering when moisture or oxygen in the atmosphere alters the chemical composition of rock minerals.

Where is mechanical weathering most common?

Mechanical weathering

This type of weathering does not change the minerals that make up a rock. It just breaks them into smaller pieces. Mechanical weathering is most common in cold, dry climates.

Where is mechanical weathering most likely to occur?

– 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.

How does mass movement affect the coast?

Mass movement – Once weakened by weathering mass movement can then deliver this material to beaches and the sea to be eroded. Some mass movement processes occur slowly, such as soil creep and solifluction, but some are very rapid such as rock falls.

What causes mass movement in geography?

Mass movement is the downhill movement of sediment that moves because of gravity. There are four different types of mass movement. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering. Saturated soil (soil filled with water) flows down a slope.

What is mass movement explain the types of mass movement?

Mass movement is the downhill movement of sediment that moves because of gravity. There are four different types of mass movement: Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering. Mudflow.

What is a major cause of a mass movement?


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