Erosion and deposition by water, wind , ice, and gravity

EROSION AND DEPOSITION

• Erosion is the process by which sediment and other materials are moved
• from one place to another place
• Deposition is the process by which eroded material is dropped

Factors of erosion

• Gradient is the measure of change of elavation over time
• Load is the materials carried by a stream
• Discharge is the amount of water carried by a stream over time
• Canyons, valley's, and sinkholes can be created by erosion

Factors of deposition

• A looping pattern in a river is called a meander
• Streams can deposit materials into a pattern called a flood plain
• Deposited material can form a fan shaped pattern called a delta

What shapes a shore line

• Waves can break down shore line
• Currents can cause waves to travel parallel to a shore line
• Costal landforms form by erosion
• sea cliffs and wave cut platforms
• sea caves, arches, and stacks are all formed by erosion

Things that form by deposition

• beaches form by deposition
• layer upon layer of sediment over time

Wind, Ice, and Gravity

• Winds can shape the earth
• When wind blows sand particles against rock, it wears it down
• creating abraded rock, loess's are deposits of fine grained sediment
• The removal of fine sediment is called desert pavement
• Dunes are waves of sand that move over time due to wind pushing them

What kinds of ice shape earth

• A glacier is a large mass of ice that moves
• Glacial rift is all debris that is carried by glaciers
• An alpine glacier is a glacier that forms in a mountainous region
• Continental glaciers are thick sheets of ice that spread over large areas

How gravity shapes the earth

• Mass movement is when gravity causes large masses to move
• All slopes are always going under slow mass movement
• Creep is the slow movement of material downslope
• Rapid mass movement is much faster and more destructive
• It includes rockfall, landslides, and mudflow

Erosion and deposition videos

• http://m.youtube.com/watch?v=T429PMh1Hug