Mass Movement

What is mass movement in geography grade 11?

Mass movement is when stuff like soil, rocks, or even big chunks of land slide or roll downhill because of gravity. It’s like nature’s way of rearranging the landscape, and it happens all the time, everywhere.

What is the mass movement of rocks?

mass movement, 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.

What is mass movement called?

Mass movement is also commonly referred to as “mass-wasting.”

What causes mass movement?

Mass movement, or mass-wasting, is primarily caused by the force of gravity acting on loose materials such as soil, rocks, and debris on slopes or hillsides.



Mass Movement

Mass Movement Class 11 Notes: When you’re on a hill and you see rocks, dirt, or even whole chunks of land sliding or tumbling down, that’s what we call mass movement. It’s like a slow, unstoppable dance of soil and rock, shaped by gravity, happening all around us. In Class 11 geography, understanding mass movement is like uncovering the secrets of how our Earth changes its face over time.

This article is like a treasure map, guiding you through the basics of mass movement in simple terms. We’ll explore how it happens, why it matters, and what we can do about it. So, let’s take a journey into the world of mass movement, where every slide, slump, and tumble tells a story of our planet’s constant evolution.

Mass Movement

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What is Mass Movement?

Mass movement is when rocks, soil, or debris move downhill due to gravity’s pull. It’s like a slow, steady slide or tumble down a slope. This natural process shapes landscapes over time, forming hills, valleys, and cliffs. Factors like the steepness of the slope, the type of soil or rock, and rainfall can influence mass movement. Understanding it helps us predict and prevent disasters like landslides, keeping communities safe....

Terms Used for Mass Movement Geography

In geography, various terms are used to describe different types of mass movement, which refer to the downhill movement of Earth materials under the influence of gravity. Some common terms used for mass movement in geography include:...

Classification of Mass Movement

Mass movements, also known as mass wasting, are classified based on various factors such as the type of material involved, the speed of movement, the nature of the movement, and the environmental conditions. Here is a classification of mass movement based on these factors:...

Causes Preceding Mass movements

Before a mass movement event occurs, several factors or triggers often precede it, leading to instability in the slope or hillside. Here are some common causes that precede mass movements:...

Mass Movement Modes

Mass movement modes refer to the different ways in which materials move downslope due to the force of gravity. These modes are categorized based on the characteristics of the movement and the nature of the materials involved. Here are some common mass movement modes:...

Difference between Weathering, Erosion and Mass Movement

Aspect Weathering Erosion Mass Movement Definition The breakdown or alteration of rocks and The transport of weathered material by The downhill movement of Earth materials minerals at or near the Earth’s surface wind, water, ice, or gravity under the influence of gravity Process Breaks down rocks into smaller fragments Carries away weathered material Involves the movement of already or alters their chemical composition from one place to another weathered material downslope Agent Physical, chemical, and biological forces Wind, water, ice, and gravity Gravity primarily, but other factors acting on rocks and minerals such as water or ice may contribute Result Produces regolith (loose, fragmented rock Transports weathered material to new Results in landslides, rockfalls, and mineral material) locations, causing sediment deposition soil creep, etc. Rate of Change Typically slow Variable, can be slow or rapid Variable, can be slow or rapid Location Occurs at or near the Earth’s surface Occurs during transport and deposition Occurs on slopes or inclines Example Frost wedging, chemical weathering, Rivers carving canyons, wind blowing Landslides, rockfalls, mudflows, soil biological activity sand dunes, glaciers moving rocks creep, etc....

Factors Affecting Mass Movement

Gravity: Primary force driving mass movement. Slope Gradient: Steeper slopes are more prone to mass movement. Geology and Rock Type: Different types of rocks have varying susceptibilities to erosion and movement. Vegetation: Root systems can stabilize soil, reducing the likelihood of movement. Water Content: Saturated soils are more prone to movement. Human Activity: Excavation, deforestation, and construction can increase the likelihood of mass movement....

Effects of Mass Movement

Landscape Change: Mass movement can reshape the landforms over time. Property Damage: Structures in the path of mass movement can be damaged or destroyed. Loss of Life: Mass movement events can be deadly, especially in populated areas. Ecological Impact: Disruption of ecosystems and habitats due to mass movement....

Mitigation and Management

Engineering Solutions: Such as retaining walls, slope stabilization, and drainage systems. Land Use Planning: Avoiding construction in high-risk areas. Revegetation: Planting vegetation to stabilize slopes. Early Warning Systems: Monitoring and alerting systems to warn of potential mass movement events....

FAQs : Mass Movement

What is mass movement in geography grade 11?...