MASS MOVEMENT GRADE 11 GEOGRAPHY.pptx
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This document discusses mass movement in geography. It defines mass movement as the downward movement of weathered debris such as soil, stones, and rocks down a slope due to gravity. It identifies different types of mass movements including landslides, earthflows, and mudflows. It also discusses factors that influence the degree of mass movement such as slope gradient, vegetation, soil type, deforestation, mining, and overgrazing. Finally, it outlines strategies for minimizing the effects of mass movement such as maintaining vegetation, avoiding overgrazing, and using slope stabilization techniques like fencing and concrete walls.
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II.A Minerals and Rocks
Core Subject: Earth and Life Science
II. Earth Materials and Processes
A. Minerals and Rocks
The learners
demonstrate an
understanding of:
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Landslides refer to the downward movement of land masses along steep slopes under the influence of gravity. They are classified based on speed and type of movement. Slow movements include solifluction, creep, and soil creep. Rapid movements include debris slides, rock slides, and rock falls. Landslides are caused by both internal factors like slope angle, groundwater, lithology, and geological structures, as well as external factors like earthquakes. Preventive measures include controlling slope angles, installing drainage systems, reinforcing weak zones, and controlling deforestation.
landslides_ce242 (1).ppt
Landslides refer to the downward movement of land masses along steep slopes under the influence of gravity. They are classified based on speed and type of movement. Slow movements include solifluction, creep, and soil creep. Rapid movements are rapid flows. Landslides occur due to internal causes like steep slopes, groundwater, and lithology as well as external causes like earthquakes. Preventive measures include controlling slope angles, installing drainage systems, and stabilizing weak geological structures.
landslides_ce242.ppt
Landslides refer to the downward movement of land masses along steep slopes. They are classified based on speed and type of movement. Slow movements include solifluction, creep, and soil creep. Rapid movements are rapid flows. Landslides occur due to internal causes like steep slopes and water pressure, and external causes like earthquakes. Preventive measures include terracing slopes, installing drainage systems, and covering weak geological structures.
landslides
Landslides refer to the downward movement of land masses along steep slopes under the influence of gravity. They are classified based on speed and type of movement. Slow movements include solifluction, creep, and soil creep. Rapid movements include debris slides, rock slides, and rock falls. Landslides are caused by both internal factors like slope angle, groundwater, lithology, and geological structures, as well as external factors like earthquakes. Preventive measures include controlling slope angles, installing drainage systems, reinforcing weak zones, and controlling deforestation.
Earthquake Hazards
I do not have enough context to answer those specific questions. The document provided discusses different types of earthquake hazards and their effects, but does not mention fault types in the Philippines or bringing cookies to class.
MASS MOVEMENT
Mass wasting refers to the downslope movement of rock and soil due to gravity. It occurs when gravitational forces exceed the frictional or shear strength of the material. The document discusses the key factors that influence mass wasting, including slope steepness, water content, vegetation, and earthquakes. It also describes different types of mass wasting processes such as slides, flows, slumps, creeps, and falls, which are classified based on the material and speed of movement. The document emphasizes that mass wasting is an important geologic hazard, and outlines some methods to lessen its effects, such as removing weight from slopes, using engineering controls, and stabilizing slopes with vegetation.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
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Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
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MASS MOVEMENT GRADE 11 GEOGRAPHY.pptx
- 1. Mass movement Geography Grade 11 by Shaun Mamabolo
- 2. Descirbe different types of mass movemnt 1 Discuss different factors that influence the degree of mass movement 2 Develop prevention strategies for mass movement 3 LESSON OBECTIVES:
- 3. Refers to the downwards movement of weathered debris such as soil, stones, tress, mud and rocks on a slope as a result of the force of gravity
- 4. FACTORS INFLUENCINGTHE DEGREE OF MASS MOVEMENT NATURAL INFLUENCES • GRADIENT OFTHE SLOPE • VEGITATION • SOIL HUMAN INFLUENCES • DEFORESTATION • MINING EXPLOSION • OVERGRAZING
- 5. TYPES OF MASS MOVEMENT Land slide Large mass of land breaks loose and plunges down a slope. Usually occurs along a fault zone where a block of land slides down hill. Can be triggered by an Earthquake
- 6. EARTHFLOW • Occur in clay areas when soil particles, saturated with water, move down slope.
- 7. MUDFLOW A mud flow is a type of landslide that occurs when wet, saturated soil becomes liquefied and flows downhill in a manner similar to a liquid.
- 8. IMPACT ON PEOPLE ANDTHE ENVIRONMENT Using your own knowledge discussion the effects of mass movement Effect of mass movement on people? (1x2) - - Effect of mass movement on the environment? (1x2) - -
- 9. Strategies for minimising effect of mass movement • Maintaining vegetation • Avoiding overgrazing • Fencing and concrete slope stabilise
- 11. • What is mass movement? (1) • Name two mass movement processes. (2) • Discuss the factors that influence the degree of mass movement. (2x4) • Differentiate between land slide and earth flow. (2x4) • Using the image from Google earth develop prevention measures for the landform from mass movement (2x6)