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Science wed

Weathering erosion deposition

How is weathering defined? When rocks are exposed to water and air. Changed physically and chemically
Physical weathering Takes place when rock is split or broken into smaller pieces of the same material without its composition
Frost action / ice wedging Water seeps in between the cracks and freezes then expands
Chemical weathering When a rock minerals are changed into different substances
Oxidation Occurs when oxygen interacts with minerals
Hydration Water interacts with minerals
Carbonation Carbon dioxide interacts with minerals
Weathering rates overall depends on what 3 facts..... 1. Partical size/ surface area exposed of the surface
Sediments Rocks broken into fragments, regardless of their size
Erosion Transporting sediments and depositing the some
Mudslide Main driving force behind all agents of erosion
Avalanche The primary agent of erosion
What is the diameter range for boulders 25.6
What is the diameter range for silt? 550
What is the velocity required to keep a pebble moving in a stream? 600
Deposition The final step in the erosion depositional system and usually occurs at the mouth of the stream
What are the factors that control deposition rate? Partical size , shape , density , velocity
Abrasion Rub or bounce against each other
Exfoliation Peeling away of large sheets on surface of rocks
Created by: Katedid
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