What is mass movement PDF?
Mass movements are the result of weathering on slopes. By definition, it is the process of erosion in which earth materials like rock and soil move down the slope because of gravitational pull.
What is a mass movement explain its types?
Mass movement, often called mass wasting, is the downslope movement of a mass of surface materials, such as soil, rock, or mud. The most basic reason is the angle of repose, or slope of the hillside. Other causes of mass movements include earthquakes, lack of vegetation, abundance of water, geology, and gravity.
What are examples of mass movement?
Mass wasting is the movement of rock and soil down slope under the influence of gravity. 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 force causes all types of mass movement?
Gravity
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 are the 4 kinds of mass movements?
There are four different types of mass movement:
- 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 type of mass movement is slide?
c) Slides: A slide is the downslope movement of a soil or rock mass occurring dominantly on the surface of rupture or relatively thin zones of intense shear strain.
What are 4 factors affect mass movement?
The factors that influence mass movement • Slope/Gradient: Allow mass movement to happen, the steeper the slope the quicker the regolith will move. • Water/P…
What are the different types of mass movement?
Slumping/Rotational Slip. Cliffs formed from boulder clay,material deposited by glacial periods,are susceptible to high rates of coastal erosion.
Rockfall. Bits of rock fall off the cliff face,usually due to freeze-thaw weathering.
What are the 4 plate movements?
What are the 4 plate movements? What are the major plate tectonic boundaries? Divergent: extensional; the plates move apart. Spreading ridges, basin-range. Convergent: compressional; plates move toward each other. Includes: Subduction zones and mountain building. Transform: shearing; plates slide past each other. Strike-slip motion. How would you describe the motion of plates in a collision ]