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Vocabulary
Mechanical Weathering
Chemical Weathering
Mass Movement
Erosion Factors
100
An area of low-lying ground adjacent to a river, formed mainly of river sediments and subject to flooding. *DAILY DOUBLE*
Floodplain
100
What is mechanical weathering?
The physical breakdown of rock
100
What is chemical weathering?
When rock is broken down as a result of the chemicals in it changing.
100
Dry soil and rock slide quickly down a steep slope, the most destructive type of mass movement.
Landslide.
100
Does the shape of a stream affect the amount of erosion? yes or no?
Yes
200
A wide, sloping deposit of sediment formed where a stream leaves a mountain range onto dry land.
Alluvial Fan
200
How can plants mechanically weather a rock?
Their roots force the rock to break as they grow into the rock.
200
How can water chemically weather a rock?
Water dissolves rock slowly overtime.
200
A mixture of water, rock and soil, flow rapidly downhill, occurs often in dry areas that receive a heavy rain. *Daily Double*
Mudflow
200
How does volume of flow affect erosion?
Faster flowing streams with more water cause more erosion.
300
A landform made of sediment that is deposited where a river flows into a body of water.
Delta
300
What do we call the grinding away of rock and rock particles carried by water, ice, wind, or gravity?
Abrasion
300
How can oxygen weather rock? *Daily Double*
It causes the metal in the rock to oxidize--rust
300
A mass of rock and soil suddenly slip down a slope, the material moves downhill in one piece.
Slump
300
How does the amount of rainfall affect erosion?
More rain causes more erosion
400
Also known as mass wasting, is the bulk movement of soil and rock debris down a slope. (Movement down slope)
Mass Movement
400
What do we call it when water seeps into cracks in the rock, freezes, expands the rock and causes the crack to?
Freezing/Ice wedging
400
Name one living organism that CHEMICALLY weathers rock and explain how.
Lichens-produce weak acids
400
Very slow downhill movement of rock and soil, the result of freezing and thawing beneath Earth’s surface.
Creep
400
How does vegetation affect erosion?
Fewer plants will cause more erosion to take place.
500
A stream that flows into a larger stream or body of water.
Tributary
500
List the 5 types of mechanical weathering.
Freezing/Ice wedging, Release of Pressure, Plant Growth, Animal Action, Abrasion
500
List the 4 types of chemical weathering.
Acid rain, water, oxygen, living organisms
500
What are the 4 types of mass movement?
Landslide, Mudslide, Slump, Creep
500
How does slope affect erosion. *Daily Double*
Steep slopes cause more erosion than shallow slopes.