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Weathering

Earth Science

QuestionAnswer
What is it when rocks fall and tumble down hillsides, rubbing against each other on the way ? Gravity
What is it when roots wedge into cracks and push rocks apart ? Plants
What is the break down of rock by chemical process ? Chemical Weathering
What is the break down of rock by physical means ? Mechanical Weathering
What blows sand and gravel against rocks ? Wind
What digs and push rocks around ? Animals
What is it when water gets into cracks and expands when it freezes to break apart rock ? Ice
What dissolves rock very slowly ? Water
What pushes rocks against each other causing abrasion ? Water
What dissolves rock a little quicker, commonly carbonic acids ? Weak Acids
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