Erosion
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This document discusses various processes of erosion and deposition. It describes five main agents that cause erosion: gravity, glaciers, wind, running water, and ocean waves. Each agent breaks down and transports material, then deposits sediments in new locations to form landforms like moraines, drumlins, deltas, and beaches. Gravity causes rapid mass movement or slow creeping. Glaciers carry debris and leave piles of debris called moraines. Wind erodes loose material from deserts and fields, depositing loess and dunes. Running water is a major cause, forming canyons and depositing material in river deltas and flood plains. Ocean waves erode shorelines, depositing beaches, spits, and barrier
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Erosion by Bluejays77
The document discusses various agents of erosion including wind, water, glaciers, waves, and gravity. It provides examples of different types of erosion caused by each agent and defines key terms. For example, it states that running water is the most powerful erosion agent, eroding continents at an average rate of 1 inch every 750 years. The document also covers different types of mass movement including landslides, slumps, falls, rockfalls, and mudflows. It describes farming conservation methods to reduce erosion like terraces, contour farming, and cover crops.
Agents of Erosion
The document discusses various agents of erosion. It describes how water, in the form of surface water and groundwater, is the most powerful erosion agent and can create landforms like deltas and caves. Ice is also noted as a powerful erosion force, with moving glaciers carving valleys. Wind erosion predominantly impacts arid regions, changing rock shapes. Waves in coastal areas continuously erode old landforms and build new ones through marine processes. The document also notes that human activities now represent a significant force of erosion through construction, mining, and other land alterations.
Erosion and Deposition
TRUE OR FALSE: The Earth’s surface has stayed the same for thousands of years
FALSE: the Earth’s surface is always changing
EXAMPLE
EROSION & DEPOSITION
EROSION
Is the process by which natural forces move weathered rock and soil from one place to another.
Sediment – material moved by erosion .
DEPOSITION
Occurs where the agents of erosion lay down sediment.
Mass Movement
Any one of several processes that move sediment downhill.
Different types of Mass Movement
Landslide
- occurs when rock and soil slide quickly down a steep slope.
Different types of Mass Movement
Mudflow
- mudflow is a rapid downhill movement of a mixture of water, rock, and soil.
Different types of Mass Movement
Slump
- a mass of rock and soil suddenly slips down a slope.
Different types of Mass Movement
Creep
- very slow downhill movement of rock and soil.
Water Erosion
Rills and Gullies
Rills
- tiny grooves in the soil.
Gully
- a large groove , or channel, in the soil that carries runoff after a rainstorm
Streams and Rivers
Stream
- a channel along which water is continually flowing down a slope.
River
- a large stream
Amount of Runoff
In an area depends on five main factors:
1st – amount of rain
2nd – vegetation
3rd – type of soil
4th – shape of the land
5th – how people use the land
Erosion by River
Through erosion, a river creates a waterfalls, flood plains, meanders, and oxbow lakes.
Waterfall
May occur where a river meets an area of rock that is very hard and erodes slowly.
Flood plain
Flat, wide area of land along a river.
Meander
A loop like bend in the course of the river
Oxbow lake
A meander that has been cut off from the river.
Deposits by River
Deposition creates landforms such as alluvial fans and deltas. It can also add soil to a river’s flood plain.
Alluvial Fans
A wide, sloping deposit of sediment formed where a stream leaves a mountain range.
Deltas
Sediment deposited where a river flows into an ocean or lake.
Groundwater Erosion
Groundwater can cause erosion through a process of chemical weathering.
Stalactite – hangs down from the roof of a cave.
Stalagmite – pointed piece of rock that sticks u p from the floor.
How Water Erode and Carries Sediment
Most sediment washes or falls into the river as a result of mass movement and runoff. Other sediment erodes from the bottom or sides of the river.
Abrasion- is the wearing away of rock by grinding action.
- occurs when particles of sediment in flowing water bumped into the steam again and again.
Erosion and Sediment Load
A river’s slope, volume of flow, and the shape of its trembled all affect how fast the river flows and how much sediment it can erode.
Slope
Is the amount the river drops toward sea level over a give distance.
Volume of Flow
A river’s flow is the volume of water that moves past a point on the river on a given time.
Streambed Shape
Affects the
12 s070502 e_erosion and deposition ppt
Erosion is the process by which rock material is detached and transported from one location to another by forces like wind, water, ice or gravity. There are several types of erosion including wind erosion, water erosion, wave erosion, gravitational erosion and glacial erosion. Deposition occurs when the transported material can no longer be carried by the force and settles in a new location. Deposition happens through processes like decreasing wind speed, slowing water flow or melting ice. Erosion and deposition work together to continuously change the landscape over time as material is worn down and rebuilt in other areas.
EROSION & DEPOSITION (teach)
Erosion and deposition are closely related processes where erosion involves the movement of rocks and sediment from one location to another under the forces of water, wind, or ice. Deposition then occurs when these agents carrying sediment slow down and drop their loads in a new location. Water is the primary agent of erosion, carrying sediment downstream as it erodes rocks and soil from higher elevations. As water velocity decreases, such as at the mouth of a river, its sediment load is deposited, potentially forming features like deltas or beaches over time. Wind is also an erosive force, picking up and transporting sediment which is later deposited in locations like sand dunes when winds calm.
Erosion
The document summarizes various processes of erosion. It discusses different agents of erosion including water, wind, glaciers and gravity. Water is identified as the most constant agent of erosion, carrying away weathered particles through processes like surface runoff and groundwater flow. Rivers form distinctive landforms during different stages from young to old. Glaciers also shape landscapes through plucking and abrasion, depositing till and forming features like moraines, drumlins and eskers when they melt.
Earth changes6 09
Volcanic eruptions, earthquakes, and landslides are three processes that can change the Earth's surface. Volcanoes produce gases, liquids, and solids from inside the Earth that alter the landscape. Earthquakes cause the Earth's surface to shake and shift, sometimes triggering landslides or tsunamis. Landslides make sudden changes by causing rocks and debris to slide down slopes. While Earth's changes generally occur slowly, these processes can also result in rapid and violent transformations of the surface.
Weathering, Erosion & Deposition
The document discusses various natural processes that shape the Earth's surface over time, including erosion, deposition, and weathering. It provides examples of different types of erosion such as water erosion, glacial erosion, and wind erosion. It also describes related landforms that result from erosion and deposition processes, such as deltas, moraines, and meanders. Various agents that cause weathering and erosion are identified, such as water, wind, ice, and plants.
Recommended
Erosion by Bluejays77
The document discusses various agents of erosion including wind, water, glaciers, waves, and gravity. It provides examples of different types of erosion caused by each agent and defines key terms. For example, it states that running water is the most powerful erosion agent, eroding continents at an average rate of 1 inch every 750 years. The document also covers different types of mass movement including landslides, slumps, falls, rockfalls, and mudflows. It describes farming conservation methods to reduce erosion like terraces, contour farming, and cover crops.
Agents of Erosion
The document discusses various agents of erosion. It describes how water, in the form of surface water and groundwater, is the most powerful erosion agent and can create landforms like deltas and caves. Ice is also noted as a powerful erosion force, with moving glaciers carving valleys. Wind erosion predominantly impacts arid regions, changing rock shapes. Waves in coastal areas continuously erode old landforms and build new ones through marine processes. The document also notes that human activities now represent a significant force of erosion through construction, mining, and other land alterations.
Erosion and Deposition
TRUE OR FALSE: The Earth’s surface has stayed the same for thousands of years
FALSE: the Earth’s surface is always changing
EXAMPLE
EROSION & DEPOSITION
EROSION
Is the process by which natural forces move weathered rock and soil from one place to another.
Sediment – material moved by erosion .
DEPOSITION
Occurs where the agents of erosion lay down sediment.
Mass Movement
Any one of several processes that move sediment downhill.
Different types of Mass Movement
Landslide
- occurs when rock and soil slide quickly down a steep slope.
Different types of Mass Movement
Mudflow
- mudflow is a rapid downhill movement of a mixture of water, rock, and soil.
Different types of Mass Movement
Slump
- a mass of rock and soil suddenly slips down a slope.
Different types of Mass Movement
Creep
- very slow downhill movement of rock and soil.
Water Erosion
Rills and Gullies
Rills
- tiny grooves in the soil.
Gully
- a large groove , or channel, in the soil that carries runoff after a rainstorm
Streams and Rivers
Stream
- a channel along which water is continually flowing down a slope.
River
- a large stream
Amount of Runoff
In an area depends on five main factors:
1st – amount of rain
2nd – vegetation
3rd – type of soil
4th – shape of the land
5th – how people use the land
Erosion by River
Through erosion, a river creates a waterfalls, flood plains, meanders, and oxbow lakes.
Waterfall
May occur where a river meets an area of rock that is very hard and erodes slowly.
Flood plain
Flat, wide area of land along a river.
Meander
A loop like bend in the course of the river
Oxbow lake
A meander that has been cut off from the river.
Deposits by River
Deposition creates landforms such as alluvial fans and deltas. It can also add soil to a river’s flood plain.
Alluvial Fans
A wide, sloping deposit of sediment formed where a stream leaves a mountain range.
Deltas
Sediment deposited where a river flows into an ocean or lake.
Groundwater Erosion
Groundwater can cause erosion through a process of chemical weathering.
Stalactite – hangs down from the roof of a cave.
Stalagmite – pointed piece of rock that sticks u p from the floor.
How Water Erode and Carries Sediment
Most sediment washes or falls into the river as a result of mass movement and runoff. Other sediment erodes from the bottom or sides of the river.
Abrasion- is the wearing away of rock by grinding action.
- occurs when particles of sediment in flowing water bumped into the steam again and again.
Erosion and Sediment Load
A river’s slope, volume of flow, and the shape of its trembled all affect how fast the river flows and how much sediment it can erode.
Slope
Is the amount the river drops toward sea level over a give distance.
Volume of Flow
A river’s flow is the volume of water that moves past a point on the river on a given time.
Streambed Shape
Affects the
12 s070502 e_erosion and deposition ppt
Erosion is the process by which rock material is detached and transported from one location to another by forces like wind, water, ice or gravity. There are several types of erosion including wind erosion, water erosion, wave erosion, gravitational erosion and glacial erosion. Deposition occurs when the transported material can no longer be carried by the force and settles in a new location. Deposition happens through processes like decreasing wind speed, slowing water flow or melting ice. Erosion and deposition work together to continuously change the landscape over time as material is worn down and rebuilt in other areas.
EROSION & DEPOSITION (teach)
Erosion and deposition are closely related processes where erosion involves the movement of rocks and sediment from one location to another under the forces of water, wind, or ice. Deposition then occurs when these agents carrying sediment slow down and drop their loads in a new location. Water is the primary agent of erosion, carrying sediment downstream as it erodes rocks and soil from higher elevations. As water velocity decreases, such as at the mouth of a river, its sediment load is deposited, potentially forming features like deltas or beaches over time. Wind is also an erosive force, picking up and transporting sediment which is later deposited in locations like sand dunes when winds calm.
Erosion
The document summarizes various processes of erosion. It discusses different agents of erosion including water, wind, glaciers and gravity. Water is identified as the most constant agent of erosion, carrying away weathered particles through processes like surface runoff and groundwater flow. Rivers form distinctive landforms during different stages from young to old. Glaciers also shape landscapes through plucking and abrasion, depositing till and forming features like moraines, drumlins and eskers when they melt.
Earth changes6 09
Volcanic eruptions, earthquakes, and landslides are three processes that can change the Earth's surface. Volcanoes produce gases, liquids, and solids from inside the Earth that alter the landscape. Earthquakes cause the Earth's surface to shake and shift, sometimes triggering landslides or tsunamis. Landslides make sudden changes by causing rocks and debris to slide down slopes. While Earth's changes generally occur slowly, these processes can also result in rapid and violent transformations of the surface.
Weathering, Erosion & Deposition
The document discusses various natural processes that shape the Earth's surface over time, including erosion, deposition, and weathering. It provides examples of different types of erosion such as water erosion, glacial erosion, and wind erosion. It also describes related landforms that result from erosion and deposition processes, such as deltas, moraines, and meanders. Various agents that cause weathering and erosion are identified, such as water, wind, ice, and plants.
Weathering, Erosion, Deposition
Erosion is the transportation of weathered materials by wind, water, ice, or gravity. Water and ice erode rocks by entering cracks and expanding when freezing, weakening the rock over time. Erosion causes mudslides and landslides when materials slide down hills. Deposition occurs when sediment is deposited by slowing winds or water in places like river deltas or banks. Weathering breaks rocks into smaller pieces through extreme heat and cold, water, and ice wearing away at the rocks. There are three types of weathering: mechanical, physical, and chemical.
Lecture and study guide rocks, soils, erosion, weathering and deposition
This document provides an overview of rocks, soils, erosion, weathering, and deposition. It discusses the three main types of rocks - igneous, sedimentary, and metamorphic - and how they are formed. Soil formation through weathering and the layers of the soil profile are explained. Various agents and processes of erosion, weathering, and deposition are defined. Methods for controlling erosion like contour farming, terracing, and planting vegetation are also outlined. The key message is the importance of protecting natural resources and keeping the earth healthy.
Weathering (teach)
The document discusses the destructive forces that weather landforms over time. It describes weathering as the process where rocks are broken down into smaller pieces by forces like water, freezing and thawing, plant and animal activity, and acid in water. Weathering destroys existing landforms and creates new ones through erosion and deposition. The two main components of destructive forces are weathering, which breaks rocks into smaller pieces, and erosion, which transports weathered material.
Mass Movement
Leaving Certificate Geography slides on Mass Movement (Landslides, rockfalls, avalanches, soil creep etc)
Erosion and deposition
This document provides an overview of erosion, deposition, and the agents that cause them. It discusses:
- The three main processes of erosion: detachment of particles, lifting them, and transporting them to a new location. The main agents of erosion are water, wind, waves, ice, and gravity.
- How each agent causes erosion. Water is the most influential due to its ability to move large objects and wear away rock over time. Wind erodes in dry areas without vegetation. Waves relentlessly pound coastal areas. Ice plucks and abrades rock beneath glaciers.
- Deposition occurs when the transporting medium loses speed or particles increase in resistance, causing them to settle in a
Coastal Mass Movement
Coastal landslides occur due to erosion from waves and weathering processes weakening cliffs composed of permeable rock layers overlying impermeable clays. When rainwater builds up in the permeable layers, it increases the weight and reduces friction, allowing large sections of the cliff top to break away and rotate down the slope along a concave slip plane in a process called slumping. Slumping produces characteristic back-tilted blocks and is a common type of landslide seen in clay-based coastal cliffs that have been undercut by the sea.
Chapter 8- erosional forces
1. Erosional forces like gravity, wind, water, and glaciers cause erosion by removing and transporting surface materials from one location to another through processes like mass movement.
2. Mass movement occurs as gravity pulls materials like rock and sediment down slopes, sometimes causing rapid events like landslides but sometimes occurring so slowly they are barely visible.
3. Glaciers are large masses of snow and ice that erode land as they move and later deposit sediments elsewhere, leaving behind features like moraines, eskers, and glacial till.
Erosion & weathering change
S6E5. Students will investigate the scientific view of how the earth’s surface is formed.
Gathering facts over erosion, weathering & deposition
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The document discusses various types of coastal erosion and mass movement processes, as well as different techniques for managing coastal erosion, including both hard and soft engineering approaches. Hard engineering techniques use man-made structures like seawalls to defend the coast, while soft techniques work with natural processes like beach nourishment. The document provides examples of techniques like groynes, gabions, revetments, rock armor, and beach replenishment.
Weathering, Erosion, Deposition, Landscapes
This document discusses weathering, erosion, and deposition processes that shape the Earth's surface. It explains that weathering breaks down rock through physical or chemical means. Erosion then transports weathered material, which is eventually deposited elsewhere. The main agents of erosion are water, wind, ice, and gravity. Glaciers in particular played a major role in shaping landscapes like those in New York State. The document also examines how climate, rock type, and other geologic factors influence landscape development over time.
Weathering, Erosion, and Deposition
Weathering breaks rocks down into smaller pieces through physical or chemical processes when exposed to the atmosphere and hydrosphere. Physical weathering breaks rocks without changing their chemical composition through processes like frost wedging and abrasion. Chemical weathering alters the chemical composition of rocks through oxidation, hydrolysis, and carbonation. The products of weathering accumulate as soil and are further eroded by agents such as water, wind, and ice. Erosion transports eroded material which is eventually deposited elsewhere, usually in bodies of water, based on factors like particle size, shape, density, and transport velocity.
Humid geomorphic environment
Running water and streams are formed from net precipitation. Streams are classified as perennial or intermittent depending on continuous flow. A river is a large natural channel that flows into another body of water. Streams have sources, mouths, confluences and basins. Rivers originate based on factors like water availability and slope. They evolve through youthful, mature and old stages. Rivers erode the land through processes like hydraulic action and transport sediment in solution, suspension, saltation and traction. This forms erosional landforms like valleys, gorges, waterfalls and meanders as well as depositional landforms like floodplains, deltas and alluvial fans.
Weathering, Erosion and Deposition.(3rd/4th grade teach)
Ties weathering, erosion and deposition together as one continuing process for younger elementary students.
Weathering agents
Wind is a major geological agent that causes erosion, transportation, and deposition. The three types of erosive work by wind are deflation, abrasion, and attrition. Deflation involves the removal of sand and dust particles, creating depressions called oases or desert pavement surfaces called hammadas. Abrasion occurs when wind carries sand and dust, grinding and polishing rock surfaces to form landforms like yardangs, pedestal rocks, and ventifacts. Transportation by wind moves loose materials through suspension, saltation, or rolling. Depositional features formed by wind include migrating dunes and loess deposits of wind-blown silt. Engineering in dune and loess areas requires stabilizing structures and treating
Weathering,erosion,deposition
This document defines and provides examples of various geological processes including weathering, erosion, and deposition. It describes weathering as the breakdown of rocks through exposure to air or rubbing, which can occur through chemical processes like acid rain or living organisms, or mechanical processes like thermal cracking. Erosion is defined as the transport of eroded sediments from one location to another by forces like water, wind, glaciers or gravity. Deposition is then the addition of these sediments to a new location through processes such as wind or temperature changes.
Agents of erosion
This document discusses various agents of erosion. It describes how water, ice, wind, waves and human activity can all cause erosion. Water is identified as the most powerful agent, as it erodes both above and below ground through processes like cave formation and delta creation. Ice also shapes landscapes when glaciers move, carving valleys. Wind predominantly erodes in arid regions, changing rock shapes. Waves in coastal areas continually form new landforms through marine erosion of existing ones. Finally, human activities like construction, mining and agriculture are significant modern causes of erosion.
Weathering, Erosion, Deposition
The document discusses the geological processes of weathering, erosion, and deposition that shape the Earth's landforms over time. Weathering breaks down rocks into smaller pieces through the action of water, ice, wind and other forces. Erosion is the movement and transport of weathered rocks and soil by agents like wind and water. Deposition occurs as eroded pieces are deposited in new locations, slowly changing the Earth's surface daily through accumulation. These natural processes continuously reshape the planet over both short and long timescales.
Chapter 8 section 1 (erosion by gravity)
Gravity is the main force that causes erosion. Various agents such as water, wind, and glaciers erode and transport sediments from one location to another through processes like mass movement. Mass movement includes different types of downhill sediment flows like slumps, creeps, rock falls, rock slides, and mudflows. When sediments are eroded, they are deposited elsewhere through the loss of energy by the transporting agent. People building on steep slopes prone to erosion through mass movement must take steps to stabilize the land such as planting vegetation, installing drainage, and using retaining walls.
Landforms unit 11
This document provides an overview of different types of landforms and the geological processes that form them. It discusses lithological landforms such as volcanic features like lava fields, craters, and plateaus. Karst landforms like caves and stalactites/stalagmites are formed by the dissolution of limestone. Climate landforms include glacial features from alpine glaciers and periglacial features in dry temperate zones. Structural landforms are related to rock structures. Coastal landforms result from erosion and deposition by sea processes and include cliffs, arches, lagoons, and marshes. For each landform type, examples of specific features are given along with the geological agents and processes responsible
Erosion and transportation
Weathering is the breakdown of rocks through physical or chemical processes, while erosion is the transportation of weathered sediments by natural agents such as water, wind, or glaciers. There are several types of water erosion that impact landforms, including splash erosion, sheet erosion, gully erosion, and coastal erosion caused by waves. Glaciers erode through plucking and abrasion, smoothing and polishing rock surfaces. Wind erosion can carry dust and sand, wearing away soft rocks and shaping dunes in deserts. Eroded materials are transported through processes like solution, suspension, traction, and saltation, with factors like particle size and environmental conditions influencing how far materials can be moved.
W.E.D. Review
The document summarizes the processes of weathering, erosion, and deposition. It describes how weathering breaks down rocks through mechanical and chemical processes. Erosion then transports this weathered material, which is deposited in new locations through various agents such as running water, glaciers, wind, and ocean waves. This forms new landforms and shapes the Earth's surface over time through the continuous weathering, erosion, and deposition cycle.
Erosion Ppt
This document discusses different types of erosion and how they shape landscapes. It describes four primary types of erosion caused by water: splash, sheet, rill, and gully erosion. Moving water such as streams and oceans erode cliffs, coastlines, and river banks through hydraulic action, corrosion, and impact. Wind erosion shapes desert landscapes and forms arches and sand dunes. Glaciers erode through abrasion, plucking, and thrusting, carving out mountain valleys and leaving moraines. Mass movement and exfoliation also contribute to gravitational erosion. Factors like precipitation, vegetation, and human activities affect erosion rates. Terracing and windbreaks can help prevent erosion.
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Weathering, Erosion, Deposition
Erosion is the transportation of weathered materials by wind, water, ice, or gravity. Water and ice erode rocks by entering cracks and expanding when freezing, weakening the rock over time. Erosion causes mudslides and landslides when materials slide down hills. Deposition occurs when sediment is deposited by slowing winds or water in places like river deltas or banks. Weathering breaks rocks into smaller pieces through extreme heat and cold, water, and ice wearing away at the rocks. There are three types of weathering: mechanical, physical, and chemical.
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This document provides an overview of rocks, soils, erosion, weathering, and deposition. It discusses the three main types of rocks - igneous, sedimentary, and metamorphic - and how they are formed. Soil formation through weathering and the layers of the soil profile are explained. Various agents and processes of erosion, weathering, and deposition are defined. Methods for controlling erosion like contour farming, terracing, and planting vegetation are also outlined. The key message is the importance of protecting natural resources and keeping the earth healthy.
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The document discusses the destructive forces that weather landforms over time. It describes weathering as the process where rocks are broken down into smaller pieces by forces like water, freezing and thawing, plant and animal activity, and acid in water. Weathering destroys existing landforms and creates new ones through erosion and deposition. The two main components of destructive forces are weathering, which breaks rocks into smaller pieces, and erosion, which transports weathered material.
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Leaving Certificate Geography slides on Mass Movement (Landslides, rockfalls, avalanches, soil creep etc)
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This document provides an overview of erosion, deposition, and the agents that cause them. It discusses:
- The three main processes of erosion: detachment of particles, lifting them, and transporting them to a new location. The main agents of erosion are water, wind, waves, ice, and gravity.
- How each agent causes erosion. Water is the most influential due to its ability to move large objects and wear away rock over time. Wind erodes in dry areas without vegetation. Waves relentlessly pound coastal areas. Ice plucks and abrades rock beneath glaciers.
- Deposition occurs when the transporting medium loses speed or particles increase in resistance, causing them to settle in a
Coastal Mass Movement
Coastal landslides occur due to erosion from waves and weathering processes weakening cliffs composed of permeable rock layers overlying impermeable clays. When rainwater builds up in the permeable layers, it increases the weight and reduces friction, allowing large sections of the cliff top to break away and rotate down the slope along a concave slip plane in a process called slumping. Slumping produces characteristic back-tilted blocks and is a common type of landslide seen in clay-based coastal cliffs that have been undercut by the sea.
Chapter 8- erosional forces
1. Erosional forces like gravity, wind, water, and glaciers cause erosion by removing and transporting surface materials from one location to another through processes like mass movement.
2. Mass movement occurs as gravity pulls materials like rock and sediment down slopes, sometimes causing rapid events like landslides but sometimes occurring so slowly they are barely visible.
3. Glaciers are large masses of snow and ice that erode land as they move and later deposit sediments elsewhere, leaving behind features like moraines, eskers, and glacial till.
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S6E5. Students will investigate the scientific view of how the earth’s surface is formed.
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The document discusses various types of coastal erosion and mass movement processes, as well as different techniques for managing coastal erosion, including both hard and soft engineering approaches. Hard engineering techniques use man-made structures like seawalls to defend the coast, while soft techniques work with natural processes like beach nourishment. The document provides examples of techniques like groynes, gabions, revetments, rock armor, and beach replenishment.
Weathering, Erosion, Deposition, Landscapes
This document discusses weathering, erosion, and deposition processes that shape the Earth's surface. It explains that weathering breaks down rock through physical or chemical means. Erosion then transports weathered material, which is eventually deposited elsewhere. The main agents of erosion are water, wind, ice, and gravity. Glaciers in particular played a major role in shaping landscapes like those in New York State. The document also examines how climate, rock type, and other geologic factors influence landscape development over time.
Weathering, Erosion, and Deposition
Weathering breaks rocks down into smaller pieces through physical or chemical processes when exposed to the atmosphere and hydrosphere. Physical weathering breaks rocks without changing their chemical composition through processes like frost wedging and abrasion. Chemical weathering alters the chemical composition of rocks through oxidation, hydrolysis, and carbonation. The products of weathering accumulate as soil and are further eroded by agents such as water, wind, and ice. Erosion transports eroded material which is eventually deposited elsewhere, usually in bodies of water, based on factors like particle size, shape, density, and transport velocity.
Humid geomorphic environment
Running water and streams are formed from net precipitation. Streams are classified as perennial or intermittent depending on continuous flow. A river is a large natural channel that flows into another body of water. Streams have sources, mouths, confluences and basins. Rivers originate based on factors like water availability and slope. They evolve through youthful, mature and old stages. Rivers erode the land through processes like hydraulic action and transport sediment in solution, suspension, saltation and traction. This forms erosional landforms like valleys, gorges, waterfalls and meanders as well as depositional landforms like floodplains, deltas and alluvial fans.
Weathering, Erosion and Deposition.(3rd/4th grade teach)
Ties weathering, erosion and deposition together as one continuing process for younger elementary students.
Weathering agents
Wind is a major geological agent that causes erosion, transportation, and deposition. The three types of erosive work by wind are deflation, abrasion, and attrition. Deflation involves the removal of sand and dust particles, creating depressions called oases or desert pavement surfaces called hammadas. Abrasion occurs when wind carries sand and dust, grinding and polishing rock surfaces to form landforms like yardangs, pedestal rocks, and ventifacts. Transportation by wind moves loose materials through suspension, saltation, or rolling. Depositional features formed by wind include migrating dunes and loess deposits of wind-blown silt. Engineering in dune and loess areas requires stabilizing structures and treating
Weathering,erosion,deposition
This document defines and provides examples of various geological processes including weathering, erosion, and deposition. It describes weathering as the breakdown of rocks through exposure to air or rubbing, which can occur through chemical processes like acid rain or living organisms, or mechanical processes like thermal cracking. Erosion is defined as the transport of eroded sediments from one location to another by forces like water, wind, glaciers or gravity. Deposition is then the addition of these sediments to a new location through processes such as wind or temperature changes.
Agents of erosion
This document discusses various agents of erosion. It describes how water, ice, wind, waves and human activity can all cause erosion. Water is identified as the most powerful agent, as it erodes both above and below ground through processes like cave formation and delta creation. Ice also shapes landscapes when glaciers move, carving valleys. Wind predominantly erodes in arid regions, changing rock shapes. Waves in coastal areas continually form new landforms through marine erosion of existing ones. Finally, human activities like construction, mining and agriculture are significant modern causes of erosion.
Weathering, Erosion, Deposition
The document discusses the geological processes of weathering, erosion, and deposition that shape the Earth's landforms over time. Weathering breaks down rocks into smaller pieces through the action of water, ice, wind and other forces. Erosion is the movement and transport of weathered rocks and soil by agents like wind and water. Deposition occurs as eroded pieces are deposited in new locations, slowly changing the Earth's surface daily through accumulation. These natural processes continuously reshape the planet over both short and long timescales.
Chapter 8 section 1 (erosion by gravity)
Gravity is the main force that causes erosion. Various agents such as water, wind, and glaciers erode and transport sediments from one location to another through processes like mass movement. Mass movement includes different types of downhill sediment flows like slumps, creeps, rock falls, rock slides, and mudflows. When sediments are eroded, they are deposited elsewhere through the loss of energy by the transporting agent. People building on steep slopes prone to erosion through mass movement must take steps to stabilize the land such as planting vegetation, installing drainage, and using retaining walls.
Landforms unit 11
This document provides an overview of different types of landforms and the geological processes that form them. It discusses lithological landforms such as volcanic features like lava fields, craters, and plateaus. Karst landforms like caves and stalactites/stalagmites are formed by the dissolution of limestone. Climate landforms include glacial features from alpine glaciers and periglacial features in dry temperate zones. Structural landforms are related to rock structures. Coastal landforms result from erosion and deposition by sea processes and include cliffs, arches, lagoons, and marshes. For each landform type, examples of specific features are given along with the geological agents and processes responsible
Erosion and transportation
Weathering is the breakdown of rocks through physical or chemical processes, while erosion is the transportation of weathered sediments by natural agents such as water, wind, or glaciers. There are several types of water erosion that impact landforms, including splash erosion, sheet erosion, gully erosion, and coastal erosion caused by waves. Glaciers erode through plucking and abrasion, smoothing and polishing rock surfaces. Wind erosion can carry dust and sand, wearing away soft rocks and shaping dunes in deserts. Eroded materials are transported through processes like solution, suspension, traction, and saltation, with factors like particle size and environmental conditions influencing how far materials can be moved.
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Lecture and study guide rocks, soils, erosion, weathering and deposition
Lecture and study guide rocks, soils, erosion, weathering and deposition
Weathering, Erosion and Deposition.(3rd/4th grade teach)
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The document summarizes the processes of weathering, erosion, and deposition. It describes how weathering breaks down rocks through mechanical and chemical processes. Erosion then transports this weathered material, which is deposited in new locations through various agents such as running water, glaciers, wind, and ocean waves. This forms new landforms and shapes the Earth's surface over time through the continuous weathering, erosion, and deposition cycle.
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This document discusses different types of erosion and how they shape landscapes. It describes four primary types of erosion caused by water: splash, sheet, rill, and gully erosion. Moving water such as streams and oceans erode cliffs, coastlines, and river banks through hydraulic action, corrosion, and impact. Wind erosion shapes desert landscapes and forms arches and sand dunes. Glaciers erode through abrasion, plucking, and thrusting, carving out mountain valleys and leaving moraines. Mass movement and exfoliation also contribute to gravitational erosion. Factors like precipitation, vegetation, and human activities affect erosion rates. Terracing and windbreaks can help prevent erosion.
Erosion
Erosion is the process by which earth's surface is worn away by agents such as water, wind, and ice. There are several types of erosion. Water erosion includes splash erosion, sheet erosion, rill erosion, and gully erosion caused by rain and moving water. Streams erode their banks through hydraulic action, corrosion, and impact of particles. Coastal erosion is caused by the pounding of ocean waves, which carve out sea caves, arches, and sea stacks. Wind erosion occurs in deserts and polishes rocks. Glacial erosion processes include abrasion, plucking, and thrusting, which carve out valleys and leave behind moraines. Human activities like agriculture and defore
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The document summarizes the key layers that make up Earth's structure, from crust to inner core. It then discusses plate tectonics and how the movement and convergence of tectonic plates results in one plate being pushed under another. Evidence of past tectonic motion comes from matching rock types and fossils on opposite sides of oceans.
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The earth is continuously changing. Many factors cause these changes. View this powerpoint to learn more about the earth and these factors.
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Exogenic processes are processes that take place at or near the Earth's surface that cause the surface to wear away through physical and chemical weathering. Some physical weathering processes include ice wedging, release of pressure, growth of plants, animals burrowing, and abrasion by wind and water. Chemical weathering breaks down rock through processes like reaction with water, oxygen, carbon dioxide, acids, and living organisms. Erosion by various agents like water, wind, ice and gravity further transports weathered materials and shapes the landscape over time.
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Exogenic processes are processes that take place at or near the Earth's surface that cause the surface to wear away through physical and chemical weathering. Physical weathering breaks rock into smaller pieces through processes like ice wedging, plant growth, animal activity, and abrasion. Chemical weathering breaks down rock through chemical changes caused by water, oxygen, carbon dioxide, living organisms, and acid rain. Erosion by water, wind, ice, and gravity further transports weathered materials and shapes the landscape over time through sedimentation and mass wasting.
EXOGENIC PROCESSES-ELS.pptx
Exogenic processes are processes that take place at or near the Earth's surface that cause the surface to wear away through physical and chemical weathering. Some physical weathering processes include ice wedging, release of pressure, growth of plants, animal activity, and abrasion. Chemical weathering processes involve water, oxygen, carbon dioxide, living organisms, and acid rain breaking down rocks through chemical changes. Erosion by water, wind, ice and gravity then transports the weathered material away, which eventually settles as sediment through the process of sedimentation.
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This document discusses how the Earth's landscape is continuously changed by various forces. It describes how rivers erode landscapes to form landforms like waterfalls, meanders, ox-bow lakes, and deltas. Sea waves erode coastal areas to form sea caves, sea arches, and sea cliffs. Glaciers erode and deposit material as they move, leaving behind moraines and carving out lakes. Wind erosion forms structures like mushroom rocks and deposits materials to create sand dunes and loess. The document provides examples of different landforms shaped by these external, or exogenic, geological processes.
exogenic-processes-170817105133 (1).pdf
This document discusses various exogenic (surface) processes that shape the Earth's surface through erosion and weathering. It describes different types of physical and chemical weathering that break down rock material. Erosion by water, wind, ice and gravity is then able to transport this weathered material. Mass wasting specifically refers to the movement of this loosened material down slopes due to gravity, which can occur through sliding, flowing or falling. The material is eventually deposited through sedimentation.
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The Earth's surface is constantly changing through geological processes such as weathering, erosion, and deposition. Weathering breaks down rock and sediment into smaller pieces through forces like water, wind, ice, and plants. Erosion then transports this weathered material from one place to another via agents such as water, wind, and glacial ice based on factors like amount, slope, speed, and surface type. Finally, deposition occurs as eroded sediments are deposited in new locations, building landforms over long periods of time like deltas, canyons, river meanders, and floodplains.
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Sedimentary rocks are formed over long periods of time through the erosion, transportation, deposition and compaction of sediment. Small pieces of earth are eroded by wind and water, washed downstream, and settle in layers on riverbeds, lakebeds and ocean floors. These layers are pressed down by additional layers deposited over thousands or millions of years, slowly transforming the bottom layers into rock. Sedimentary rocks form as particles accumulate and are later lithified, or compressed into solid rock. Common types of sedimentary rocks include limestone, shale, sandstone and coal.
Plates of the earth
actually thanks for the slideshare !!!!! i took a little help from yhis website so i log in to this to help others
Chapter 2 lesson 2 sci
Weathering and erosion by forces like wind, water, and ice cause changes to landforms over time. Erosion transports sediment that is deposited elsewhere, building up landforms like deltas at river mouths. Flooding deposits sediments that can enrich flood plains for farming but also cause damage. Underground erosion can lead to sinkholes if cave roofs collapse. Landslides occur when gravity moves soil, mud, and rocks down slopes. Plants both break up rocks with growing roots but also fight erosion by holding soil in place.
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The document discusses how the Earth's surface is constantly changing through various weathering and erosion processes. It describes three main types of weathering - physical weathering caused by water, wind, and ice, which breaks down rock and sediment. Erosion is then defined as the movement and transport of this weathered material by water, wind, ice, or gravity. Specific examples of erosion by each of these forces are given, such as glacial erosion, water erosion, and landslides caused by gravity. The document concludes by discussing related geologic processes like deposition, which forms new landforms over time like deltas, canyons, meanders, and floodplains through the deposition of eroded sediments.
Chapter 3 Land
This document summarizes various landforms and the geological processes that create them. It discusses both internal forces like earthquakes and volcanoes, as well as external forces like erosion, weathering, streams, glaciers and waves that shape the Earth's surface over time. Specific landforms are examined like mountains, plains, plateaus and valleys, as well as features caused by folding, faulting, volcanic activity, deposition and more. Examples throughout illustrate these concepts.
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The document summarizes various aeolian and fluvial landforms and processes. It describes how wind erosion can cause abrasion, deflation, and attrition, shaping landforms like yardangs, desert pavements, and blowouts. Wind can transport materials through saltation, suspension, or traction and deposit them as ripples, loess, or various dune types. Fluvial processes involve erosion, transportation, and deposition by water to form and shape landforms. Young rivers have V-shaped valleys while mature rivers form floodplains and meanders. In old age, rivers flow across peneplains with few landforms.
Class 7 chapter 3 part 2 pdf
This slides of class 7 Geography, chapter 3 ,Our Changing Earth part -2 ,
in this presentation describe exogenic force agents ;Water,Wind,Sea Weaves,and Glacier.
this is useful for teachers and students of Chhattisgarh board and CBSE Board for teaching and understanding .
there is good photos in example.
also available teaching video in you tube GURU's Channel.
https://www.youtube.com/channel/UCuf04TA3UGuLDtnlOkJVntA
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Erosion
- 2. Breaking Down Processes Weathering The breaking down of the earth’s material by natural processes. Erosion The process by which weathered rock and soil particles are moved from place to place. Deposition The process by which weathered sediments are laid down in a new location creating new landforms.
- 3. 5 Agents of Erosion Gravity Glaciers Wind Surface Water / Running Water Ocean Shoreline / Ocean Waves
- 4. Gravity Pulls rock and soil down a slope Called Mass Movement Rapid Rockslides Mudflow Avalanche
- 6. Gravity Slow Slump Creep
- 7. Glaciers Carry very large to very small debris Most powerful agent Deposits Form piles called moraines Drumlins – little mounds Glacial lakes Kettle lakes U-shaped valleys
- 8. Moraines
- 10. Kettle Lakes U-shaped valleys
- 11. Glaciers
- 12. Glacial Erosion
- 13. Wind Removes loose material from the earth’s surface. Amount of material carried depends on wind speed Most active in deserts, plowed fields, beaches deserts Deposits by wind Loess- layer of fine silt or sand Dunes- mounds of sand
- 14. Loess
- 15. Dunes
- 16. Running Water MAJOR CAUSE OF EROSION When water moves it carries particle called the load. load Speed of water determines the size of the load Creates canyons and valleys River deposits Delta Oxbow lake Flood plains
- 17. River deltas
- 18. Oxbow Lakes
- 19. Flood Plains
- 20. Waves Constantly erode and shape the shoreline. Formation Sea cliffs Sea stacks and caves
- 21. Sea Stacks
- 22. Sea Stacks & cliffs
- 23. Cape Flattery, Olympic Peninsula Sea caves
- 24. Waves Deposits Beaches Spits sand bars Barrier Islands
- 26. Barrier Islands
- 27. Spits & Sandbars