Mudflows occur on very steep slopes along the coastline. The most basic reason is the angle of repose, or slope of the hillside. Ocr geography a2 mass movement sheet teaching resources. Cliffs formed from boulder clay, material deposited by glacial periods, are susceptible to high rates of coastal erosion. Ncert notes on important topics for the upsc civil services exam. Where there is limited vegetation to bind the soil together and the ground is very saturated heavy rain can produce sheet flow over the upper cliff surface.
First plan what you are going to say by making notes on this chart. That includes all earth materials, rock and regolith. H y d r o l o g y a n d f l u v i a l g e o m o r p h o l o g y geography as level 2. Mass movement the downslope movement of rock, rock debris, and soil under the influence of gravity the. Geography in action exam papers and layout revision area powerpoints to download contact us chapter 6. Boston house, 214 high street, boston spa, west yorkshire, ls23 6ad tel. The steeper the slope the faster the mass movement 2. Introduction water enters and continually cycles around the earth through the global hydrological cycle, it is a closed system with no inputs or outputs. The soil continues to be lubricated and it eventually flows over the cliff face and down onto the shore at a fast speed.
Any perceptible down slope movement of rock or regolith is often referred to in general terms as a landslide. Mass movement revision notes mass movement it is the movement of material downslope under the influence of gravity. Geography mass movement lecture notes mass movement. Apr 10, 2019 mass wasting, sometimes called mass movement, is the downward movement by gravity of rock, regolith loose, weathered rock andor soil on the sloped top layers of the earths surface. Mass movements also called mass wasting is the downslope movement of regolith loose uncemented mixture of soil and rock particles that covers the earths surface by the force of gravity without the aid of a transporting medium such as water, ice, or wind. Formerly, the term mass wasting referred to a variety of processes by which large masses of crustal materials are moved by gravity from one place to another. Watch the video, take notes, listen in for key tips on how to write your geography answers and for exam technique. Soil creep is so slow sometimes 1mm a year we barley notice it except from the effects it has. Mass wasting is the transfer or movement of rock or soil down slope primarily by gravity. 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 earths ground surface in a predominantly vertical direction. Geography as level full revision notes linkedin slideshare.
Chapter 8 mass movement leaving certificate geography. The steeper the slope the faster the mass movement. It is the umbrella term for a wide range of specific movements including landslide, rotational slumping and blockfall. Political movements that typically advocate the creation of a mass movement include the ideologies of communism and fascism. Useful for both prelims and mains exam in upsc, question are asked from geography both as standalone as well in conjunction with economy, polity or international relations.
Mass wasting, also known as slope movement or mass movement, is the geomorphic process by which soil, sand, regolith, and rock move downslope typically as a solid, continuous or discontinuous mass, largely under the force of gravity, frequently with characteristics of a flow as in debris flows and mudflows. There are several types of mass movement that occur along a coastline and involve significant quantities of material being released and falling under gravity, usually onto the shore. Identify at least two impacts on human that this type of mass movement would have. Angle of slope steeper is faster nature of regolith amount and type of vegetation water. Types of mass movement coastal processes bbc bitesize. Mass movement, often called mass wasting, is the downslope movement of a mass of surface materials, such as soil, rock, or mud. Learn the mass movement geography with free interactive flashcards. Mass movements are part of a continuum of erosional processes between weathering and. Types of mass movement another way material can be moved on the coastline is through mass movement. May 07, 2016 brief summary of mass movement while looking at soil creep and bogburst. These notes will also be useful for other competitive exams like banking po, ssc, state civil services exams and so on. We consider types of slopes, slope elements, characteristics of slopes as well as slope development. Identify the type of mass movement shown in the diagram.
Mass movements earth processes onegeology kids extra. Read through the following information which tells you about some key types of mass. Isostacyaccording to this concepts, blocks of the earths crust, because of variations in density would rise to different levels and appear on the surface as mountains, plateaux, plains or ocean basins see box for details. Exogenic geomorphic movements the geomorphic processes on the earths crust or its surface brought down by the forces emanating from above the earths surface wind, water are called exogenic geomorphic process. The movement of the material is called creeping, sliding, flowing, toppling, and falling. Deals with both indian geography and world geography. We look at the impact of mass movements as well as strategies to. Slope failures a sudden failure of the slope resulting in transport of debris down hill by sliding, rolling, falling, or slumping. Geography mass movement lecture notes mass movement the. Dec 15, 2019 earths crust and its surface are constantly evolving changing due to various forces emanating from below endogenic forces as well as above the surface of the earth exogenic forces. Jan 23, 2020 the mass movement process, also sometimes called mass wasting, occurs when soil and rock move down a slope under the force of gravity. Dechano and others published mass movement find, read and cite all the research you need on researchgate. Gcse 91 geography erosion, weathering, and mass movement.
In this lesson on geomorphology we focus on slopes and mass movements. Mass movements can be divided into four main classes. Mass movement revision notes mass movement it is the. These schematics illustrate the major types of landslide movement. Weathering types of mass movement chemical weathering is the breakdown of rock through changing its chemical composition. Mass movement blockfall, rotational slumping, landslides is important on some coasts with weak andor complex geology. Types of mass wasting include creep, slides, flows, topples, and falls, each with its. Hazardous environments geography igcse and a level. Processes of downslope movement of surficial earth materials under the pull of gravity are collectively termed mass wasting. View notes geography mass movement lecture notes from geog 0 at university of guelph. Movement of the crustal plates due to tectogenesis. Process mass wasting mass wastingdownslope movement of solid, solid and liquid material under the influence of gravity 3 variables. A block slide is a translational slide in which the moving mass consists of a single unit or a few closely related units that move downslope as a relatively coherent mass figure 2c. It is not necessary to carry out all the activities contained in this unit.
When rainwater hits rock it decomposes it or eats it away. This occurs when slightly acidic carbonic rain or sea water comes into contact with sedimentary rock, such as limestone or. A mass movement denotes a political party or movement which is supported by large segments of a population. Soil piles high behind the walls causing them to bulge and break. These forces cause physical and chemical changes to the geomorphic structure earths surface. Mass movement is the downhill movement of sediment that moves because of gravity. Print all the questions on this page, or select just the ones you want using the check boxes beside each question. Mass movement is the downslope movement of material rock and soil under the force of gravity. Mass movement is the downhill movement of cliff material under the influence of gravity. Mass movements and mass movement processes mass movements and their human impacts mass movement is defined as the down slope movement of rock and regolith near the earths surface mainly due to the force of gravity.
Each of these depends on the speed and composition of the material moving. Formerly, the term mass wasting referred to a variety of processes by which large masses of crustal materials are. These graphic notes are a handy way to help your students learn the basics of weathering, erosion, deposition and how these forces contribute to mass movement. May 14, 2015 geography as level full revision notes 1. Sep 05, 2017 the different types of erosion, weathering, and mass movement needed for edexcel gcse geography 91. Mass wasting is the downslope movement of rock debris in response to gravity.
In its broadest sense it is the movement down slope of any weathered material regolith under the influence of gravity. Steep and unstable slopes are more likely to have a mass movement than gentle and stable slopes. Mass movements talus solifluctionslow downslope movement of saturated soil at high latitudes. Pdf bedrock mass movements include some of the most common rockfalls and. Glaciers are a mass of ice moving under its own weight.
Geography notes cover physical geography and human geography. It slows down mass movement, as the roots of plants bind the soil 3. This is where land movement at a range of speeds results in destruction of property andor loss of life. Different parts of a slope can be named differently.
There is a range of different types of mass movement. Hazardous environments resulting from crustal tectonic movement global distribution and the relationship of hazards to plate tectonics convergent, divergent, conservative plate margins, hot spots. Additionally, we look at the concept, causes as well as kinds of mass movements. They are commonly found in the erosion and deposition. As you move across the triangle, mass movement change from fast to slow and dry to wet. Deposition is the process by which weathered and eroded materials. It is the movement of masses of bodies of mud, bedrock, soil, and rock debris, which commonly happen along steepsided hills and mountains because of the gravitational pull. This is one of the central concepts of this course. Mass movement processes and landforms professor paul shaw definition. Mass movement english language support project for postprimary schools. This is a good time to look at the two background sections on gravity at the end of this section.
It is a significant part of the process of erosion because it moves material from high elevations to lower elevations. The classes are based on how quickly the rock and sediment moves and how much water there is. Brief notes on earths movement explained with diagram. Powered by create your own unique website with customizable templates. Exogenic geomorphic process gives rise to exogenic geomorphic movements or simply exogenic movements such as weathering and erosion.
Mass movements and mass movement processes tulane university. Second sheet is included for more extensive notetakingdoodling. Ive always thought that term to be rather infelicitous, but there it is. Mass wasting, which is sometimes called mass movement or slope movement, is defined as the large movement of rock, soil and debris downward due to the force of gravity. Mass movements also called masswasting is the downslope movement of regolith loose uncemented mixture of soil and rock particles that covers the earths surface by the force of gravity without the aid of a transporting medium such as water, ice, or wind. Soil creep is greatest at the surface, it decreases with depth. Join s of fellow geography teachers and students all getting the. Please see teachers notes for explanations, additional. English language support programme for postprimary schools. Both communists and fascists typically support the creation of mass movements as a means to overthrow a government and create their own government, the mass.