Limiting development of floodplains is effective because it

allows floodplains to absorb floodwaters

an depositional feature parallel to the stream channel

the land area that contributes water to a stream

The suspended load of a stream

consists of fine sand, silt, and clay-sized particles

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The Work of Streams

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Questions 20

Answers

1
Limiting development of floodplains is effective because it
helps keep floodwaters within stream channels
allows floodplains to absorb floodwaters
eliminates wide stream meanders
it more expensive to build structures on flat land
2
A natural levee is
a depositional feature perpendicular to the stream channel
an erosional feature perpendicular to the stream channel
an depositional feature parallel to the stream channel
an erosional feature parallel to the stream channel
3
Which of the following is not a way that streams erode their channels
friction
grinding
abrasion
dissolving soluble materials
4
The total amount a stream can transport is
suspended load
capacity
competence
average load
5
What are the boundaries called that separate streams in adjacent drainage basins
mountain ranges
divides
levees
valleys
6
The sorted material deposited by a stream is
competence
bed load
suspended load
alluvium
7
How does competence change with velocity?
inversely
does not change
directly
8
One flood control method has been to attempt to keep the stream's flow within its channel by
artificial levees
flood control dams
artificial cutoffs
meanders
9
A flat low-lying portion of a stream valley subject to flooding is a
floodplain
natural levee
drainage basin
bed load
10
One major cause of floods is
a decrease in stream discharge
light rain
rapid snow melt
increased capacity of stream channels
11
A drainage basin is
all streams that flow directly into an ocean
the channel of a stream
the land covered by floodwaters
the land area that contributes water to a stream
12
The suspended load of a stream
consists primarily of highly soluble substances
consists of fine sand, silt, and clay-sized particles
moves along the bottom of the channel by rolling or sliding
is deposited before the bed load
13
Most streams carry the largest part of their loads
along the stream's bottom
as bed load
as dissolved material
in suspension
14
A depositional feature that forms where a stream enters a lake or ocean is a(n)
natural levee
delta
meander
oxbow lake
15
What is the measure of the largest particles a stream can carry?
capacity
competence
discharge
gradient
16
Which of the following is not a way that streams transport sediment?
in suspension
in solution
as dissolved particles
rolling along the bottom
17
Sediment carried by a stream along the bottom of its channel
bed load
dissolved load
suspended load
bottom load
18
The flat portion of a valley floor adjacent to a stream channel is called a
divide
meander
floodplain
tributary
19
What two factors affect a stream's ability to carry a load
velocity and capacity
competence and capacity
discharge and competence
discharge and velocity
20
The capacity of a stream is directly related to its
velocity
discharge
gradient
meandering

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