2Water CycleWatch the 2 water cycle animations while reviewing your water cycle diagram.When something from your diagram is discussed or shown put a If you are missing something, make a note of it on your diagram.
17More Runoff = More Erosion How are rills, gullies, streams, tributaries and rivers connected?Rills are small grooves that runoff creates and travels in the soil.Rills connect together and make larger channels called gullies.Gullies connect together forming larger channels called streams.Streams connect together as larger streams or rivers.(Tributary-any stream/river that flows into a larger one)RillGullyStreamRiverGeneral Statement About Erosion:More Runoff = More Erosion
21(Largest in US-Mississippi River Drainage Basin) Parts of a River System::Drainage basin (watershed)-A land area from which a major river and its tributaries collect its water(Largest in US-Mississippi River Drainage Basin)Divide-An area of the land around a drainage basin where the land is high and causes the water to run into that drainage basin.
22VALLEYWhen a river cuts into a steep slope of a mountain or a flat plateau aV-shape will be cut in the land
23Where a river meets an area of rock that is very hard and erodes slowly. The rock below is softer and erodes quickly.WATERFL
24W A T E R F L The river water flows over softer rock downstream. The softer rock wears away faster than the harder rock.Eventually a waterfall develops where the softer rock was removed.
25Flood Plain An area downriver where the land is gently sloping. The river will erode a wide, flat area of land instead of a deep valley.When the river floods this land will fill with the excess water.
26Softer rock eroded away The moving water of a river will erode softer rock before eroding harder rock.This will cause the river to work its way around harder rock and create loop-like bends in the river.Overtime the bends become more and more curved.MEANDRSofter rock eroded awayHarder rock stays
28A meander that has been cut off from the main river during a time of flooding. XBWLAKE
29O X B W L A K E River flows through meander. Deposition builds up inside meander curve.OXBWLAKEAs the floodwaters drop, sediment builds up in front of the openings of the meander and dam up the water inside forming an oxbow lake.When the river floods, the high water finds a straighter route downstream.
31Water slows when hits gentle slope ALLUVIAL FANWater slows when hits gentle slopeWhere a stream flows out of a steep, narrow mountain valley, the water slows down, drops sediment in the shape of a wide sloping fan.Steep mountain valleySediment formsfan-shaped deposit
32Water slows when hits gentle slope ALLUVIAL FANWater slows when hits gentle slope
33D E L T A Mississippi River Green-land built up from depositionWhen a river meets the ocean or large lake, the water slows down.The river drops its sediment and can build up new land.
34River flooding adds soil to flood plain. When waters rise, deposition occurs in the flood plain.This soil is very fertile.
37Infiltration- Increasing the amount of groundwater through precipitation or surface water that absorbs (or seeps) into the ground
38Water easily sinks down into the limestone. KARST TOPOGRAPHYIn regions where a layer of limestone is near the surface, groundwater erosion changes the shape of the land.Water easily sinks down into the limestone.Deep valleys, sinkholes and caverns are common.
43StalaCtite-As limestone particles in the groundwater is deposited on the Ceiling of a cave an icicle of limestone formsStalaGmite-As groundwater drips on the Ground of a cave an upside down icicle of limestone forms
44SINKHOLE The roof of a cave collapses resulting in a depression. The cave roof erodes the limestone too thin.