Which statement best describes slumping a mass wasting process?
What is mass wasting? Downhill movement of masses of bedrock, rock debris or soil, driven by the pull of gravity.
What is mass wasting? Downhill movement of masses of bedrock, rock debris or soil, driven by the pull of gravity.
A variety of factors can cause mass wasting. These factors include increased water, increased slope steepness, vegetation removal, and earthquakes.
which of the following best describes a mass wasting event referred to as a "fall"? material tumbling through air or down a steep slope.
Which of the following best describes a mass wasting event referred to as a fall? material tumbling through air or down a steep slope.
The down-slope movement of material, whether it be bedrock, regolith, or a mixture of these, is commonly referred to as a landslide.
Mass-wasting events are triggered by changes that oversteepen slope angles and weaken slope stability, such as rapid snow melt, intense rainfall, earthquake shaking, volcanic eruption, storm waves, stream erosion, and human activities. Excessive precipitation is the most common trigger.
- Composition of Slope Material.
- Weight and Friction of Slope.
- Regional Climate Conditions.
- Water Content within Slopes.
- Gravity.
Mass wasting is the downhill movement of Earth materials under the pull of gravity. 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.
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 ...
Which type of mass wasting event is a slump?
Slump is a type of slide (movement as a mass) that takes place within thick unconsolidated deposits (typically thicker than 10 m). Slumps involve movement along one or more curved failure surfaces, with downward motion near the top and outward motion toward the bottom (Figure 15.14).
A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity.

Examples of mass wasting include debris flow, rock slides, landslides, avalanches, and slumps. However, transpiration is the loss of excess water in plants through the stomata.
The most common triggering mechanism for mass wasting is: vibrations due to earthquakes and a sudden influx of excessive water. The rate of chemical weathering can be affected by mechanical weathering.
Increased water content within the slope is the most common mass-wasting trigger. Water content can increase due to rapidly melting snow or ice or an intense rain event.
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface.
Areas with steep topography and rapid rainfall, such as the California coast, Rocky Mountain Region, and Pacific Northwest, are particularly susceptible to hazardous mass-wasting events. Mass wasting occurs when a slope fails. A slope fails when it is too steep and unstable for existing materials and conditions.
Conclusion #1: On Earth, the mass of the rock is the only variable we need to address when discussing mass wasting. The amount of gravitational force acting on any mass of rock at Earth's surface is essentially the same. Conclusion #2: Mass wasting is more energetic as the rock mass increases.
What is Mass Movement? Mass movement is the movement of earth materials called regoilth down a slope under the influence of gravity.
Effects of mass wasting are; Leads to formation of scars which may leave the land exposed to agents of erosion. May lead to soil erosion leaving the land bare and infertile. May lead to formation of new landforms e.g depressions which may be filled with water to form lakes.
What are 5 causes of mass wasting?
- Volcanic activity. Volcanic eruptions many times causes huge mudflows. ...
- Landslides. When masses of rock, earth, or debris move down a slope there is landslide. ...
- Mudslide. ...
- Weathering and erosion. ...
- Ice wedging. ...
- Other causes. ...
- Rock falls and rockslides. ...
- Debris flows.
Mass wasting, also known as mass movement, is a general term for the movement of rock or soil down slopes under the force of gravity. It differs from other processes of erosion in that the debris transported by mass wasting is not entrained in a moving medium, such as water, wind, or ice.
- Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering.
- Mudflow. Saturated soil (soil filled with water) flows down a slope.
- Landslide. Large blocks of rock slide downhill.
- Rotational slip. Saturated soil slump down a curved surface.
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.
The most common types of mass wasting are slumps, rockslides, debris flows, and earthflow. Slumps are slow and short-distance downslope movements of semi-consolidated earth material on a curved or planar sliding surface.
Engineering solutions include barriers and retaining walls, drainage pipes, terracing the slope to reduce the steepness of the cuts, and immediate revegetation. Rockfalls can be controlled or eliminated by the use of rock bolts, cables, and screens and by cutting back slopes to lesser gradients.
Adding water increases slope instability. It lubricates rock fragments so that they slide down slope more easily. Mass wasting occurs more readily in rainy seasons for this reason. It turns out that a small amount of water in the soil can aid slope stability because of increased surface tension.
Rock falls, slumps, and debris flows are all examples of mass wasting. Often lubricated by rainfall or agitated by seismic activity, these events may occur very rapidly and move as a flow.
What are the effects of mass movement? Mass movement alters the shape of the coastline and aids in the formation of coastal landforms. It also can result in damage or loss of property, damage, or loss of land, damage, or loss of infrastructure, injuries and unstable ground surfaces.
Such factors include: weathering or erosional debris cover on slopes, which is usually liable to mass movement; the character and structure of rocks, such as resistant permeable beds prone to sliding because of underlying impermeable rocks; the removal of the vegetation cover, which increases the slope's susceptibility ...
Is slumping a type of mass movement?
The type of mass movement depends upon lithology: unconsolidated material (like boulder clay) - slumping. consolidated rock (like carboniferous limestone and granite) - sliding.
Mass wasting is a type of erosion that results in the mass movement of rock, soil and debris down a slope. Learn about the different types of mass wasting, including slumps, rockslides, debris flows and earthflows.
Slump - a landslide consisting of a mass of material moving downslope as a unit, usually along a curved plane of failure. The removed mass of soil and rock leave an abrupt drop-off at the top of the landslide known as a scarp.
The three characteristics used to classify mass wasting are flow, slide, and fall.
the very slow downslope movement of soil and rock fragments. rapid movements of loose, water-saturated soil are the most fluid and fastest type of mass wasting.
Mass wasting is the transfer or movement of rock or soil down slope primarily by gravity. Deposition is the process by which weathered and eroded materials are laid down or placed in a location that is different from their source.
Once rock material has been broken down into smaller, unstable pieces by weathering, the material has the potential to move downslope called mass wasting (also called a landslide).
Slower moving water erodes material more slowly. If water is moving slowly enough, the sediment being carried may settle out. This settling out, or dropping off, of sediment is deposition. The curves are called meanders because they slowly “wander” over the land. You can see how this happens in Figure below.
Rockfalls and rockslides. Rockfalls occur when pieces of rock break loose from a steep rock face or cliff. These result from the rock face being undercut by rivers or wave action.
Landslides involve rock and debris moving downslope along a planar surface, whereas slumping usually occurs along a curved interface and as a single large unit. Slumps are commonly observed in large impact craters, including Giordano Bruno, Darwin C, Klute W, Milne N, and Steno Q.
Which type of mass movement occurs when a fragment of rock breaks off and drops almost vertically to the ground below?
A landslide is a downslope movement of rock or soil, or both, occurring on the surface of rupture—either curved (rotational slide) or planar (translational slide) rupture—in which much of the material often moves as a coherent or semicoherent mass with little internal deformation.
Answer and Explanation: Rock falls are the fastest form of mass wasting. This is because falling rocks can attain speeds in excess of 60 miles per hour. Falling rocks can attain these speeds because they experience relatively little air resistance.
Mass movements (also called mass-wasting) is the down-slope movement of Regolith (loose uncemented mixture of soil and rock particles that covers the Earth's surface) by the force of gravity without the aid of a transporting medium such as water, ice, or wind.
Answer and Explanation: The slowest form of mass wasting is creep. It refers to the undetected, steady, and slow movement of geological materials such as soil and rock materials downhill.
What is mass wasting? Downhill movement of masses of bedrock, rock debris or soil, driven by the pull of gravity.
Factors that increase the potential for mass movement include the incline of the slope, the presence of water, lack of vegetation, and geological events like earthquakes. The steeper the incline of the slope, the more likely it is that materials will succumb to gravitational forces and slide downward.
Mass wasting suits better than mass movement as this leads to removal of large amount of earth's crust and also wastage of valuable rock/minerals over a surface. The mass movements also create large destruction over the place they occur. Hence the word wasting is appropriate.
Mass wasting is a rapid form of erosion that works primarily under the influence of gravity in combination with other erosional agents.
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.
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 is mass wasting or deposition?
A general term for the dislodgement and downslope transport of soil and rock material under the direct application of gravitational body stresses. In contrast to other erosion processes, the debris removed by mass wasting is not carried within, on, or under another medium.
Landslides are mass-wasting events where large amounts of weathered rock material slide down a hillslope or mountain side primarily by gravity related erosion. Landslides occur very quickly and move with incredible speed and destruction, often removing or covering everything in their path.
Another, more common example of weathering by water and gravity is mass movement or landslides. Mass movement occurs when soil is saturated with water, which makes it heavy, and the force of gravity overcomes the resistance of the slope.
Types of mass wasting include creep, solifluction, rockfalls, debris flows, and landslides, each with its own characteristic features, and taking place over timescales from seconds to hundreds of years.
Large amounts of geologic materials enter streams as sediment as a result of this landslide and erosion activity, thus reducing the potability of the water and quality of habitat for fish and wildlife.
- There are three criteria used to classify slope failures:
- The type of material that failed (e.g., bedrock or unconsolidated sediment),
- The mechanism of the failure (how the material moved as it failed), and.
- The rate of movement (how quickly the material moved).
There are several factors that influence mass wasting, but ultimately it is a battle between friction and gravity. If the friction on a rock is stronger than gravity for a particular slope, the rock material will likely stay. But if gravity is stronger, the slope will fail.
Slump. slump, in geology, downward intermittent movement of rock debris, usually the consequence of removal of buttressing earth at the foot of a slope of unconsolidated material. It commonly involves a shear plane on which a back-tilting of the top of the slumped mass occurs.
There are four main types of mass wasting which are slumps, rockslides, debris flow, and earthflow. Slumps are a downslope movement of semi-consolidated material along curved or planar surfaces. Slump happens slow and in a short distance. Rockslides are the most destructive mass wastings.
- Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering.
- Mudflow. Saturated soil (soil filled with water) flows down a slope.
- Landslide. Large blocks of rock slide downhill.
- Rotational slip. Saturated soil slumps down a curved surface.
What is the difference between mass movement and mass wasting?
Mass movement refers to the downward slope movement of rock and soil caused by gravity. Mass wasting includes events like debris flows, slumps, and rock falls. These occurrences can happen very quickly and travel as a flow, frequently lubricated by rains or stirred up by seismic activity.
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