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Stack #4630780
| Question | Answer |
|---|---|
| Weathering | the natural process by which atmospheric and environmental agents, such as wind, rain and temtpure changes ,disintegrate and decompose rocks. |
| phyical weathering | The mechanical breakdown of rocks into smaller pieces that is caused by natural processes and that does not change the chemical composition of rock material. |
| abrasion | the process by which rock is reduced in size by scarping action of other rocks driven by water , wind , and gravity. |
| chemical weathering | The chemical breakdown and decompostion of rocks 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 precipitaition | precipitation such as rain sleet or snow, that contains a high conceration of acids, often because of polluation 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 (earth science) |
| floodplain | an area along a river that forms from sediments depoisted 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 is beneath Earth's surface. |
| shoreline | the boundary between land and a body of water. |
| beach | a area of the shoreline that made up of deposited sediment. |
| sandbar | a low ridge of sand 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 , feldspar, 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 of rock down a steep slope or cilff. |
| 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 on Earth's surface , usally rising to a summit. |
| lake | a filled on 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 and ocean surface meet. |