Question 1

What does the associated graph indicate about a stream?

Accepted Answer

A) Silt and clay are carried in suspension under most stream velocities. 
B) Sand and gravel are deposited at low velocities but transported at higher velocities. 
C) Sand is carried in suspension only at high velocities. 
D) As fast-moving water slows down,fine sand can switch from transport by suspension to the bed load. 
E) All of these. 
A) Silt and clay are carried in suspension under most stream velocities. 
B) Sand and gravel are deposited at low velocities but transported at higher velocities. 
C) Sand is carried in suspension only at high velocities. 
D) As fast-moving water slows down,fine sand can switch from transport by suspension to the bed load. 
E) All of these.

Question 2

Which of the following is true about transport of sediment in a stream?

Accepted Answer

A) Pebbles and cobbles are mostly transported by suspension. 
B) Sediment that is deposited within a stream bed is unlikely to be transported again. 
C) Sand can be transported in a series of bounces along the stream bed. 
D) Slower current can carry larger clasts because the water is in contact with each clast for a longer time. 
E) Sand grains are converted into salt by the process of saltation. 
A) Pebbles and cobbles are mostly transported by suspension. 
B) Sediment that is deposited within a stream bed is unlikely to be transported again. 
C) Sand can be transported in a series of bounces along the stream bed. 
D) Slower current can carry larger clasts because the water is in contact with each clast for a longer time. 
E) Sand grains are converted into salt by the process of saltation.

Question 3

What are some effects of building a dam?

Accepted Answer

A) a stream has more sediment below the dam and so can erode more efficiently 
B) the reservoir (lake)traps sediment that over time fills up part of the reservoir 
C) a dam,whether constructed by nature or by humans,represents a permanent change in base level 
D) the stream erodes into the land instead of depositing sediment,where it enters the reservoir 
A) a stream has more sediment below the dam and so can erode more efficiently 
B) the reservoir (lake)traps sediment that over time fills up part of the reservoir 
C) a dam,whether constructed by nature or by humans,represents a permanent change in base level 
D) the stream erodes into the land instead of depositing sediment,where it enters the reservoir

Question 4

What happens to a river as it flows through a delta and encounters the sea?

Accepted Answer

A) the discharge and water velocity increase 
B) the maximum sediment grain size carried by the river increases 
C) the total sediment load carried by the river decreases 
D) all of these 
A) the discharge and water velocity increase 
B) the maximum sediment grain size carried by the river increases 
C) the total sediment load carried by the river decreases 
D) all of these

Question 5

What would happen if the ice in this area melted away?

Accepted Answer

A) the land near the ice would drop due to isostatic rebound 
B) rivers could change direction and flow away from the area once covered by ice 
C) the land subsides because the ice is removed 
D) all of these 
A) the land near the ice would drop due to isostatic rebound 
B) rivers could change direction and flow away from the area once covered by ice 
C) the land subsides because the ice is removed 
D) all of these

Question 6

Comparing these two curves on this hydrograph,the solid curve could record:

Accepted Answer

A) a shorter but more intense precipitation event 
B) the response of the stream to urbanization 
C) a more rapid spring snowmelt 
D) all of these 
A) a shorter but more intense precipitation event 
B) the response of the stream to urbanization 
C) a more rapid spring snowmelt 
D) all of these

Question 7

What type of stream is shown in this figure?

Accepted Answer

A) braided stream 
B) a stream whose channel has a low sinuosity 
C) meandering stream 
D) a stream that lacks point bars 
E) all of these 
A) braided stream 
B) a stream whose channel has a low sinuosity 
C) meandering stream 
D) a stream that lacks point bars 
E) all of these

Question 8

Which event is best represented by the hydrograph shown here?

Accepted Answer

A) a summer thunderstorm 
B) a very long period of steady light rain 
C) a long drought with no rain for months 
D) a winter snowstorm followed by very cold weather 
A) a summer thunderstorm 
B) a very long period of steady light rain 
C) a long drought with no rain for months 
D) a winter snowstorm followed by very cold weather

Question 9

What is a reasonable interpretation for the flow event recorded by this hydrograph?

Accepted Answer

A) there were two pulses of runoff because there were two storms 
B) the drainage basin has several distinct parts 
C) one pulse could be due to snowmelt and the other to rain 
D) all of these 
A) there were two pulses of runoff because there were two storms 
B) the drainage basin has several distinct parts 
C) one pulse could be due to snowmelt and the other to rain 
D) all of these

What does the associated graph indicate about a stream?

Which of the following is true about transport of sediment in a stream?

What are some effects of building a dam?

What happens to a river as it flows through a delta and encounters the sea?

What would happen if the ice in this area melted away?

Comparing these two curves on this hydrograph,the solid curve could record:

What type of stream is shown in this figure?

Which event is best represented by the hydrograph shown here?

What is a reasonable interpretation for the flow event recorded by this hydrograph?

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Exam 16: Streams and Flooding

What does the associated graph indicate about a stream?

Which of the following is true about transport of sediment in a stream?

What are some effects of building a dam?

What happens to a river as it flows through a delta and encounters the sea?

What would happen if the ice in this area melted away?

Comparing these two curves on this hydrograph,the solid curve could record:

What type of stream is shown in this figure?

Which event is best represented by the hydrograph shown here?

What is a reasonable interpretation for the flow event recorded by this hydrograph?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

Geologic Time

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Weathering, soil, and Unstable Slopes

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters