Weathering – Ch. 7, Section 1

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Weathering – Ch. 7, Section 1 Mechanical Weathering 1 -_____________: rocks are broken apart; new rocks are similar to original rocks 2 - ____________: water freezes in rock cracks 3 - ___________: roots force into cracks, then grow & break rock 4- ______________: digging, scratching at rocks, causing rocks to move Chemical Weathering 1 -___________: dissolves or changes the minerals; new rocks are different from orig. rocks 2 - ___________: carbonic acid dissolves rock, creating caves 3 - ___________: oxygen & water react w/ minerals to break down into rust 4 - ___________ from decaying plants weakens rocks