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Earth Science Unit 3
Mechanical Weathering Vocabulary
Question | Answer |
---|---|
Weathering | The breaking down of rock at Earth’s surface |
Two types of weathering | Mechanical and Chemical |
Process of mechanical weathering | rocks are broken down into smaller pieces by external conditions or physical means! |
Mechanical weathering chemical makeup | Stays the same |
Mechanical weathering characteristics | Same as the original rock |
Frost action | rocks are broken down into smaller pieces by external conditions or physical means! |
Ice wedging | Repeated process that splits rock when water seeps into cracks, then freezes and expands, causing pieces to break off. |
Abrasion | the grinding away (wearing down) of rock by other rock particles (pieces) carried in water, ice, gravity or wind |
Plants | Roots of plants grow into cracks & widen as they grow. |
Animals | Animals that burrow or dig loosen & break apart rocks in the soil. |