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Erosion and Depositi
Water and Wind
| Term | Definition |
|---|---|
| Stream | An active water channel that erodes land and transports sediment (load) |
| River | forms on a steep hill or mountain slope. |
| 5 features created by a river | Waterfall, Flood Plain, Meander, Oxbow lake, Delta |
| Waterfall | river meets a steep area of rock that erodes slowly |
| Flood plain | flat, wide area of land that floods and where sediment is deposited creating new soil |
| Meander | loop-like bend in the course of a river. Becomes more curved over time. |
| Oxbow Lake | meander that has been cut off from sediments being deposited and damming up the ends |
| Delta | sediments deposit where a rive flows into an ocean or lake. A build-up of sediment forms a landform. |
| Tributary | smaller river or stream that flows into the main river |
| Beach | area of wave-washed sediment along the coast OR area of deposited sediment carried in by a wave. |
| Waves | shape the coastlines through erosion by breaking down rock and transporting sand and other sediment. Waves also erode land by impact of great force and abrasion at shore. |
| Groundwater | underground water that can cause erosion through a process of chemical weathering, forming caves. |
| Stalactites | Formed from deposits in dropping groundwater that hang on the ROOF of a cave. |
| Stalagmites | Formed through the deposits that build-up a cone-shape on the FLOOR of a cave. |
| Abrasion | grinding away |
| Wind | causes erosion by deflation and through abrasion |
| deflation | process by which wind removes surface materials |
| 2 Types of Deflation | Dunes - piles of sand Loess - deposits of silt and clay |
| Sea Arch | formed when waves erode a layer of softer rock that underlies a layer of harder rock |
| Bluffs (& Flood Plains) | erosion forms cliffs along edge of flood plain |
| V-Shaped Valley | narrow valley formed by a river coming down fast from mountians causing erosion |
| Sea Stack | Formation left standing when a sea arch collapses |
| Sand Bar | deposition of sand along a coastline where the speed of waves slow down |