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4th WED
| Question | Answer |
|---|---|
| weathering | the breaking down of rocks into smaller pieces called sediments |
| erosion | process that moves sediments from one place to another |
| deposition | when sediments are deposited or dropped off |
| slow changes to Earth's surface | water, wind, and ice continually tear down and build up causing---- |
| delta | formed when sediments are deposited where a river meets a lake or ocean |
| canyon | formed from fast moving water, creating a deep gorge with steep sides (cliffs) |
| glacier | slow moving body of ice |
| valley | formed when a glacier or moving water erodes land between mountains |
| sand dune | formed when wind blows sand around |
| frost wedging | the freezing(expanding of ice) in the cracks of rocks, then thawing. This repeated process causes rocks to break |