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Ch 6

Test Description: Earth Science - water

Instructions: Answer all questions to get your test result.

1) The suspended load of a stream

Ausually consists of find sand, silt, and clay sized particles Bconsists primarily of highly soluble substances Cis deposited before the bed load Dmoves along the bottom of the channel by rolling or sliding

2) The capacity of a stream is directly related to its

Adischarge Bgradient Cvelocity Dmeandering

3) A depositional feature that forms where a stream enters a lake or ocean is

Anatural levee Bdelta Coxbow lake Dmeander

4) A natural levee is

Aa depositonal feature parallel to the stream channel Ban erosional feature perpendicular to the stram channel Ca erosional feature parallel to the stream channel Da depositional feature perpendicular to the stream channel

5) In the stream channel, which of the following will be deposited first

Agravel sized particles Bclay sized particles Cthe dissolved load Dfind sand and silt

6) A floodplain forms where a stream

Acuts downward rapidly Bcarries no bed load Cis far above its base level Dcuts mainly side to side

7) Which of the following would least likely to be found in a wide valley

Arapids Boxbow lake Cmeanders Da cutoff

8) What type of stream valley would form in a mountainous area

Ano valley would form Ba narrow V shaped valley Ca wide, flat valley Dthe type of valley would depend on the stream discharge

9) One major cause of a flood is

Aincreased capacity of stream channels Blight rain over a large area Crapid snow melt Da decrease in stream discharge

10) Limiting development on floodplains is effective because it

Ais more expensive to build structures on flat land Bhelps to keep floodwaters within stream channels Celiminates wide stream meanders Dallows floodplains to absord floodwaters with little harm to structures

*select an answer for all questions

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