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Stack #4622616
| Question | Answer |
|---|---|
| weathering | The natural process by which atmospheric and environmental agents, such as wind, rain and temperature changes, disintegrate and decompose rocks. |
| physical weathering | The mechanical breakdown of rocks into smaller pieces that is caused by natural processes and that does not charge the chemical composition of the rock material. |
| abrasion | The process by which rock is reduced in size by the scraping action of other rocks driven by water, wind, and gravity. |
| chemical weathering | the chemical breakdown and decomposition of ricks by natural processes in the environment. |
| oxidation | A chemical reaction in which a material combines with oxygen to form new material; in geology, oxidation is a form of chemical weathering. |
| acid precipitation | Precipitation, such as rain, sleet, or snow,that contains a high concentration of acids, often because of the pollution of the atmosphere. |
| erosion | The process by which wind, water, ice, or gravity transports soil and sediment from one location to another. |
| deposition | The process in which material is laid down. |
| floodplain | An area along a river that forms from sediments deposited when the river overflows its banks. |
| delta | A mass of material deposited in a triangular or fan shape at the mouth of a river or stream. |
| alluvial fan | A fan-shaped mass of rock material deposited by a stream when the slope of the land decreases sharply. |
| groundwater | The water that is beneath Earth's surface. |
| shoreline | The boundary between land and a body of water. |
| beach | An area of the shoreline that is made up of deposited sediment. |
| sandbar | A low ridge deposited along the shore of a lake or sea. |
| barrier island | A long ridge of sand or narrow island that lies parallel to the shore. |
| dune | A mound of wind-deposited sand that moves as a result of the action of wind. |
| loess | Fine-grained sediment of quartz, feldsparr, hornblende, mica, and clay deposited by the wind. |
| glacier | A large mass of ice that exists year-round and moves over land. |
| glacial drift | The rock material carried and deposited by glaciers. |
| creep | The slow downhill movement of weathered rock material. |
| rockfall | The rapid mass movement rock down a steep slope or cliff. |
| landslide | The sudden movement of rock and soil down a slope. |
| mudflow | The flow of a mass of mud or rock and soil mixed with a large amount of water. |
| mountain | An area of significantly increased elevation of Earth's surface, usually rising to a summit. |
| lake | A filled or partially filled basin of fresh or salt water surrounded by land. |
| river | A large natural stream of water that flows across land surfaces within a channel. |
| coastline | A location where land ocean surface meet. |