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unit 7 WED
| Question | Answer |
|---|---|
| weathering | breaking down of rock into smaller pieces |
| sediments | small pieces of rock |
| physical and chemical | two main types of weathering |
| agents of weathering | wind, water, ice wedging, humans, plant roots |
| erosion | process of moving sediment from one place to another |
| glaciers | these cause U shaped valleys |
| rivers | these cause V shaped valleys |
| agents of erosion | wind, flowing water, glaciers, gravity |
| gravity | causes sediments to fall to earths surface causing landslides, rockslides, and mudslides |
| deposition | the dropping or settling of eroded sediments |
| moraines | glaciers drop off sediments that create hills at the mouths of rivers called this |
| delta | fan shaped feature at the mouth of a river created by deposition |
| sedimentary rock | type of rock created by layers of sediment that are pressed together |
| compaction | pressure or "squishing" |
| cementation | the binding or gluing together of particles |
| minerals | act like glue to hold sedimentary rock together |