Which of the following does NOT influence whether sediment is picked up by a stream?

A. size and density of the sediment

B. turbulence of the moving water

C. location of the sediment in the stream

D. whether the stream flows north-south or east-west

The gradient of the stream between the two ends on the accompanying figure is:

A. 1 meter per kilometer

B. 10 meters per kilometer

C. 100 meters per kilometer

D. 1 to 1

E. 6 to 1

Most groundwater pumped in the United States is used for:

A. industry

B. irrigation

C. drinking water

D. swimming pools

Which of these numbered features contains most of Earth's freshwater?

A. 1-ocean

B. 2-atmosphere

C. 3-glaciers and ice sheets

D. 4-groundwater

E. 5-lakes

Which of the features on this aerial photograph is a cutbank? A. A

B. B

C. C

D. D

In the accompanying hydrograph for major river, a flood was caused by a single episode of heavy rainfall 50 kilometers upstream. When did the rain most likely occur?

A. at time $A$

B. at time B

C. at time $C$

D. at time D

What are some effects of building a dam?

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

How fast does most groundwater move in aquifers?

If a stream-cut canyon is deep and narrow, which of the following is most likely to be true?

A. rocks in the canyon walls are relatively hard and so easy to erode

B. the stream is probably close to its base level

C. downcutting is occurring faster than widening

D. the stream contains mostly small clasts, such as silt

Describe how rivers can be old or young, using the Mississippi River as an example.

Which of the following is the most common cause of river and stream flooding?

A. the onset of cold weather

B. failure of levees

C. intense precipitation

D. overgrazing

E. global warming

Which of the following is occurring in the Snake River Plain of southern Idaho?

A. water from rivers soaks into the ground, causing the rivers to disappear (be lost)

B. a large amount of water flows underground

C. huge springs result where groundwater flows onto the surface

D. all of these are occurring

What is a primary reason an increase in glaciers on land would cause sea level to fall?

A. because the temperature of the oceans decreases from cold glacial streams

B. an increase in snow cover causes the atmosphere to heat up which causes more evaporation

C. glaciers depress the land surface, which pulls sea level down with it

D. glaciers tie up large volumes of water that would otherwise be in the sea

Feature A, formed where the Nile River encounters the Mediterranean Sea, is:

A. a landslide

B. a series of waterfalls

C. a delta

D. all of these