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Frizzell Vocab # 9
Changes to Earth's Surface
| Term | Definition |
|---|---|
| weathering | the breakdown of rock into smaller particles (sediments) from the effect of wind, water and ice |
| erosion | the movement of weathered sediment on the Earth’s surface by wind, water or ice |
| deposition | the build up of land by depositing sediment and soil into a new location |
| landform | physical features of the Earth’s surface, such as mountains, dunes, hills, rivers, valleys, oceans |
| delta | a tri-angle shaped landform formed at the mouth of a river by deposition sediments carried by the river as it empties into a body of water |
| canyon | a deep, narrow landform with very steep sides created by the weathering effects of a river |
| sand dune | a landform created by wind blowing sand into tall hills |
| glacier | a large, slow-moving “river” of ice formed by T.O.Y’s of snow/ice layers |
| sediment | the small particles of rock formed as a result of weathering |
| sedimentary rock | a type of rock that forms when layers of sediment are pressed and cemented together |
| compaction | a “squeezing” together of sediment caused by pressure |
| cementation | the process of “gluing” compacted rock sediments together into a hard rock |
| landslide | a large mass of rocks and earth that suddenly and quickly moves down the side of a mountain or hill |
| earthquake | a shaking of a part of the Earth's surface that often causes great damage |
| volcano | a mountain with a hole in the top that sometimes sends out rocks, ash, and lava in a sudden explosion (called an eruption) |
| valley (V or U-shaped) | a low area of land between hills or mountains, typically with a river or stream flowing through it. |
| erupt | an explosion of steam and lava from a volcano. |
| thawing | the process of ice or snow becoming liquid as a result of warming up. |
Created by:
tfrizzell
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