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chapter 10
chapter 10 and 18
| Question | Answer |
|---|---|
| what is recurrence interval? | average time between floods of a given discharge |
| flash flood? | local sudden short floods |
| how gradient affects velocity | high gradient high velocity erosion and transport, drop in gradient drop in velocity, deposition |
| different ways in which a stream transports sediment | bed load, suspended load, and dissolved load |
| what is bed load | sand and gravel spend most of their time on the stream bed |
| what is suspended load | silt and clay spend most of their time suspended above the bed |
| what is dissolved load | soludable products of chemical weathering usually invisible |
| what is downcutting | deepening of the valley by erosion of a stream bed |
| what is base level? | sea level rise or drop, tectonic upift. Base level drops renewed downcutting. base level rises lateral erosion |
| what is bars? | sand and gravel on the beds or banks of a stream. larger streams sand bar. Smaller streams gravel bars |
| braided streams? | network of interconecting channels around numerous bars common in arid regions |
| meandering streams? | is a bend. common in humid regions |
| cut bank? | outer part of a stream bend, erosion on outside |
| point bar? | inside part of the stream bend, deposition on inside |
| oxbow lake? | cut off of the river |
| delta? | when stream runs into a standing body of water, tends to form thick sediments |
| alluvial fan? | they form on land, really common on desert regions |
| what are the stream deposits? | bars, braided stream, meandering, cut bank, point bar, oxbow lake, delta, alluvial fan, |
| drainage patterns? | dendritic, radial, and trellis |
| dendritic? | tree shaped, horizontal sedimentary |
| radial? | splitting apart, volcanic landforms |
| trellice? | bunch streams moving downward with small branches |
| what is drainage basin? | its an area involves stream and land. the entire area drained by a stream and its tributaries |
| floodplain? | part of the riversystem. it is an area capable of being flooded |
| saltation? | series of hops and bounces |
| drainage divide? | an elevated boundary that separates neighboring drainage basins. |
Created by:
sanchezdaniel
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