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Chapter 4 - Geog

Mechanical Weathering

TermDefinition
Mechanical Weathering is the break up of rocks into smaller pieces. This type of weathering is caused by frost, sudden temperature change, plants and animals.
Frost Action(freeze-thaw action) is a type of mechanical weathering
Frost Action(freeze-thaw action) happens when 1. During the day water falls into the cracks in rocks 2. At night, temperatures fall below freezing,the water freezes + expands. This widens the cracks + puts pressure on the rock. 3. Over time, freeze-thaw action keeps happening and the rock breaks.
Scree is The rock particles that fall off because of freeze-thaw action.
Frost Action (freeze-thaw action) happens where 1. Temperatures regularly raise and fall below freezing point. 2. Where rain and snow happen regularly.
Created by: toastiee1
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