| Question Answer | The process by which natural forces move weathered rock and soil from one place to another is called Erosion | Landslides, mudflows, slump, and creep are all examples of Mass movement | A stream or river that runs into another stream or river is called a Tributary | Mass movement is caused by Gravity |
|---|
What is a landslide slump?
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
. … Slumps have several characteristic features. The cut which forms as the landmass breaks away from the slope is called the scarp and is often cliff-like and concave.
What is creep and slump?
Slump moves materials as a large block along a curved surface (figure 1). 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. …
Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock
.
What type of erosion includes slumps creeps rockfalls and mudflows?
Landslides
are downslope movements of masses of soil and/or rock. They can cause some of the most spectacular damage attributable to earth movement or ground movement. Landslides include mudflows (“mudslides”), earth slumps, rockfalls, and other types of slope failures.
What are landslides mudflows slump and creep caused by?
The major forms of mass movement are slump, creep, landslides, rockfalls, and mudflows. They are similar in that they are caused by gravity and are helped by
water
. Slump, landslides, rockfalls, and mudflows are fast while creep is gradual. Mudflows and slump are caused mostly by water.
What is the difference between creep and a landslide?
A mass movement can either be
slow or rapid
. The slow downward movement of materials in a slope is called creep. This happens when the soil loosens up because of water and burrowing animals. In contrast to this, the rapid movement of large materials in a slope is called landslide.
Is a slump fast or slow?
| Failure Type Type of Material Rate of Motion | Slump Thick deposits (m to 10s of m) of unconsolidated sediment Slow (cm/y to m/y) | Mudflow Loose sediment with a significant component of silt and clay Moderate to fast (cm/s to m/s) | Debris flow Sand, gravel, and larger fragments Fast (m/s) |
|---|
What are the 4 types of landslides?
They are classified into four main types:
fall and toppling, slides (rotational and translational), flows and creep
.
What causes of landslides?
Landslides are caused
by disturbances in the natural stability of a slope
. They can accompany heavy rains or follow droughts, earthquakes, or volcanic eruptions. Mudslides develop when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris.
How does creep landslide occur?
The slowest kind of landslide is known as creep.
When clay in the soil on a hillside absorbs water, it will expand, causing the soil to swell
. As the clay dries and contracts, the particles settle slightly in the downhill direction. … As a result, the water and soil move slowly downhill like thick porridge.
What are the human activities that causes landslides?
Human activities can increase landslide risks. They include
clear-cutting, mining and quarrying, bad agricultural practices, and construction activities
.
What is creep erosion?
Creep, in geology,
slow downslope movement of particles that occurs on every slope covered with loose, weathered material
. Even soil covered with close-knit sod creeps downslope, as indicated by slow but persistent tilting of trees, poles, gravestones, and other objects set into the ground on hillsides.
What is continuous creep?
In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move slowly or
deform permanently under the influence of persistent mechanical stresses
. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material.
What are the examples of erosion?
Some of the most famous examples of erosion include
the Grand Canyon, which was worn away over the course of tens of millions of years by the Colorado River with the help of winds whipping through the formed canyon
; the Rocky Mountains in Colorado have also been the subject of intense geological study, with some …
Are landslides and erosion the same?
Landslides are
a type of soil erosion
which transports soil at a short time and very large volume. While causes of soil erosion are rainfall, soil, slope, vegetation, and humans. … Soil Erosion is process destroyed the soil by rainfall. After that, a soil was being transported to another place by surface runoff [4,5].
How can you prevent landslides and erosions?
There are also various direct methods of preventing landslides; these include
modifying slope geometry
, using chemical agents to reinforce slope material, installing structures such as piles and retaining walls, grouting rock joints and fissures, diverting debris pathways, and rerouting surface and underwater drainage.
