PT Erosion and Deposition
Sediments are dropped off(deposited) when this occurs?
Sediments are dropped off(deposited) when this occurs?
Glacier Melts
Glaciers are the most erosive force in nature, explain
Glaciers are the most erosive force in nature, explain
They are massive and push all sizes of sediments
What weathering technique does a glacier use to break down rock? Is it physical or chemical?
What weathering technique does a glacier use to break down rock? Is it physical or chemical?
Physical - frost wedging
These sized particles are moved by glaciers.
These sized particles are moved by glaciers.
Any
Describe a feature that is left behind from glacier deposition.
Describe a feature that is left behind from glacier deposition.
Moraine (Hill of till)
Sand and sediments are picked up by wind when this occurs
Sand and sediments are picked up by wind when this occurs
winds move fast
Sand and sediments are dropped off by wind when this occurs
Sand and sediments are dropped off by wind when this occurs
wind slows or changes direction
The process of the land lowering by wind erosion
The process of the land lowering by wind erosion
deflation
What feature is created by wind deposition
What feature is created by wind deposition
dunes
How can you prevent wind erosion?
How can you prevent wind erosion?
build or plant something to hold the soil in place. slow the wind down
Top or Bottom: Landslides are fast movements of material when this part of the hill becomes loose.
Top or Bottom: Landslides are fast movements of material when this part of the hill becomes loose.
Top
Top of Bottom: Slumps are fast movements of earth, when this part of a hillside becomes loose.
Top of Bottom: Slumps are fast movements of earth, when this part of a hillside becomes loose.
Bottom
Creeps are slow movements of earth, but move large sections of land. How does this happen?
Creeps are slow movements of earth, but move large sections of land. How does this happen?
Water mixed with earth is heavy and pulled downwards.
Mudflows are fast movements of material, how are they created?
Mudflows are fast movements of material, how are they created?
Water mixes with dirt and flows down
When does a mass movement stop, where is all the material deposited?
When does a mass movement stop, where is all the material deposited?
when it reaches the bottom of the hill
What weathering technique creates shoreline erosion? Physical or Chemical?
What weathering technique creates shoreline erosion? Physical or Chemical?
Physical - abrasion
How is sand moved along the EASTERN coast?
How is sand moved along the EASTERN coast?
From North to South
A breakwater or sea wall is built to stop shoreline erosion. How?
A breakwater or sea wall is built to stop shoreline erosion. How?
Slows down the water
Groins/jettys cause shoreline deposition. How?
Groins/jettys cause shoreline deposition. How?
Slow water as it moves along the shore
Why are hurricanes so destructive in terms of shorelines?
Why are hurricanes so destructive in terms of shorelines?
Fast moving water moves material easily
List the 4 major agents of erosion. Explain how to determine when each will create an erosional or depositional feature.
List the 4 major agents of erosion. Explain how to determine when each will create an erosional or depositional feature.
Ice, Wind, Water, Gravity
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What Would You Like To Risk?
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Go To The Final Question
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