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23 Cards in this Set
- Front
- Back
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Chemical Weathering
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when you mix substances with minerals and it becomes a new substance
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oxidation
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when oxygen reacts with iron
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hydrolysis
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water chemically reacting with minerals
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acid
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carbonic acid is created when CO2 dissolves in water
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Physical Weathering
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When substances physically change the shape of minerals
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Frost action
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When water goes into spaces and holes and expands, splitting the rock.
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Abrasion
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when rocks rub against each other and some of the rock comes off
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Exfoliation
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when layers of rock are pulled off
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Plant Action
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when little roots go in cracks in rocks, then get bigger and split the rock.
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Erosion
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The process of moving sediment from one place to another
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Gravity
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The most important force in erosion. It causes sediment to move.
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Wind
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sorts sediments and rounds them out with flying sand
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Water
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The most important agent in erosion. Water polishes sediments into round balls. Then it sorts the rocks by size and deposits them.
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Velocity of stream flow
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Influenced by slope and volume of stream. Rocks transported are bigger. More velocity=more erosion
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Volume of stream flow
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Depends on rainfall. Volume determines where erosion will occur.
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Glaciers
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Glaciers form sharp sediments. Sediments unsorted. Sediments have scratches from the ground.
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Deposition
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The process of dropping material out of transportation
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Horizontal Sorting
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Water starts slow and gets faster
As water slows, smaller and smaller particles deposit. Biggest sediments on the edge of the water, smaller in the middle. |
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Vertical Sorting
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Water starts fast and slows down.
Larger rocks fall first, then smaller on top. |
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Weathering Influence
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When weathering influences rocks
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Surface Area
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The amount of area on the outside. Weathering only happens on the outside, so the more surface area, the more weathering there is.
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Mineral Origin
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The place where minerals come from
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Climate
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Cool climates support more physical weathering, warm climate supports more chemical weathering.
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