unit 7 review - vocab

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Weathering
sākt mācīties
breakdown of rock into smaller pieces
Erosion
sākt mācīties
removal and transport of material
Deposition
sākt mācīties
dropping of material, such as sediment
Mechanical Weathering
sākt mācīties
weathering through physical means such as abrasion or changes in temperature
Chemical Weathering
sākt mācīties
weathering through chemical reactions
“Agent of Change”: Wind
sākt mācīties
can move particles, which can abrade solid rock
“Agent of Change”: Water
sākt mācīties
can move particles, which can abrade solid rock, and when slightly acidic, can dissolve some rock
“Agent of Change”: Waves
sākt mācīties
can smash pebbles against each other and other rock
“Agent of Change”: Ice
sākt mācīties
can split rock through cycles of freezing and thawing or by moving glaciers
Stream Gradient
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grade (or slope) measured by the ratio of drop in elevation and horizontal distance
Sediments
sākt mācīties
particles that settle after being eroded and deposited
Delta
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deposited sediment that forms a triangular structure at the mouth of the river
Alluvial Fan
sākt mācīties
a triangular structure, similar to a delta, on land
Cave/cavern
sākt mācīties
is a feature that forms when water dissolves limestone, forming voids in the rock
Karst Region
sākt mācīties
area or region characterized by many caves and sinkholes
Frost Wedging
sākt mācīties
cycles of freezing and thawing water breaks rock because ice expands
Abrasion
sākt mācīties
process of scraping or wearing something away
Subsidence
sākt mācīties
downward movement of the lithosphere
Stalactite and Stalagmite
sākt mācīties
cave features that form due to dripping water
Glacier
sākt mācīties
large areas of ice on land
Moraine
sākt mācīties
landforms that result when a glacier deposits till (glacier sediment)
Kettle lakes
sākt mācīties
depressions left behind by glaciers when ice melts
Ground Water
sākt mācīties
water underground (about 30% of Earth’s fresh water)
Sinkholes
sākt mācīties
is a circular depression that forms at the land surface when the rock beneath collapses

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