Chemical and Mechanical weathering

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Environmental Science

9th

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7 Terms

1
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define chemical weathering
alters the chemicals and inside structure that composes the rocks
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define mechanical weathering
affects the physical structure of the rock but not its composition
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exfoliation
occurs when rocks that form in high pressures on these rocks decreases and the expand and split into sheets
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abrasion
caused when rocks rub together
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thermal expansion
expansion of the rock is caused by heating
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define weathering
process where rocks wear away, weaken, or crack
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wedging
caused by substances that get in hole and cracks of the rock, and expand outward