GEOL 1403 STREAMS AND FLOODS (10)

A. a waterfall

Which of the following features is NOT formed by stream deposition? A. a waterfall B. a delta C. broad plains next to a braided stream D. a floodplain

C. As velocity increases, so does the stream's capacity to carry a larger load.

Which of the following is the correct relationship between stream velocity and sediment load? A. There is no definite relationship between velocity and sediment load. B. As velocity increases, the amount of sediment carried by the stream decreases. C. As velocity increases, so does the stream's capacity to carry a larger load.

B. a river slows and deposits sediment as it enters a lake or sea

A delta forms when: A. ocean waves, especially during storms, pile up sediment along the coast B. a river slows and deposits sediment as it enters a lake or sea C. a steep mountain front collapses sending sediment out into the sea D. windblown dust slides down steep hillsides and into a lake

A. point bar

A depositional feature that has been deposited on the inside of a curve because of lower velocity is known as a: A. point bar B. meander cutoff C. midchannel bar

A. True

A drainage pattern typical of high mountains is radial drainage. A. True B. False

Alluvial fan

A fan-shaped deposit of alluvium that forms adjacent to highlands in arid or semiarid climates is called a(n) ____________________.

B. hydraulic action and abrasion.

A stream erodes material from its banks and bed by: A. hydraulic action. B. hydraulic action and abrasion. C. suspension. D. suspension and hydraulic action. E. abrasion.

superposed streams

A stream that cuts directly through ridges that lie in their paths are called ____________________.

B. C

At which site along this stream would a cutbank form? A. D B. C C. A D. B

D. a delta

Feature A, formed where the Nile River encounters the Mediterranean Sea, is: A. all of these B. a series of waterfalls C. a landslide D. a delta

water gap

If a superposed stream erodes downward into resistant rock and cuts narrow canyons, the resulting feature is called a(n) ____________________.

mass wasting

Lateral erosion creates conditions along a stream valley that promote movement of material by another geologic process known as ____________________.

base, runoff

The renewal of erosion that results in creation of stream terraces is generally attributed to a change in ____________________ level, or a change in climate resulting in greater ____________________, and thus, discharge.

A. True

Surface runoff is confined to troughlike depressions of various sizes in channel flow. A. True B. False

C. A

The accompanying figure shows a series of river terraces. Which of these terraces is the oldest? A. B B. D C. A D. C

A. mouth

The end of the river is the: A. mouth B. headwater C. tributary

C. mouth

The end of the river is the: A. tributary B. headwater C. mouth

E. 97%.

The percentage of Earth's water that is in the oceans is: A. 50%. B. 100%. C. 93%. D. 55%. E. 97%.

E. 70%.

The percentage of the Earth's surface that is covered by water is about: A. 30%. B. 100%. C. 50%. D. 10%. E. 70%.

C. the velocity and turbulence of the current

The size of clasts that a stream can carry is primarily controlled by: A. the water temperature B. the dissolved and suspended load of a stream C. the velocity and turbulence of the current D. whether it is a permanent or ephemeral stream E. how close the stream is to the ocean

B. A ridge or strip of high ground separating one drainage basin from another

What is a drainage divide? A. The arrangement of a stream and its tributaries B. A ridge or strip of high ground separating one drainage basin from another C. The area where a stream flows into a lake or ocean D. The total area drained by a stream and its tributaries

C. A broad strip of land built up by sedimentation on either side of a stream channel. Covered with water during a flood.

What is a floodplain? A. Step-like landforms found above a stream. B. A body of sediment deposited at the mouth of a stream when the stream's velocity decreases. C. A broad strip of land built up by sedimentation on either side of a stream channel. Covered with water during a flood. D. A ridge of sediment, usually sand or gravel, deposited in the middle or along the banks of a stream.

D. discharge quickly increases and gradually decreases

What is the pattern of discharge shown by this hydrograph? A. discharges quickly decreases and gradually increases B. discharge gradually decreases and quickly increases C. discharge gradually increases and quickly decreases D. discharge quickly increases and gradually decreases

B. meandering stream

What type of stream is shown in this figure? A. a stream whose channel has a low sinuosity B. meandering stream C. all of these D. a stream that lacks point bars E. braided stream

A. braided stream

What type of stream is shown in this figure? A. braided stream B. meandering stream C. a stream whose main channel has high sinuosity D. an esker

D. braided stream

What type of stream is shown in this photograph? A. a stream whose main channel has high sinuosity B. an esker C. meandering stream D. braided stream

A. B

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

B. A

Which of the features on this aerial photograph is a point bar? A. C B. A C. B D. D

B. C

Which of the features on this aerial photograph is an oxbow lake? A. A B. C C. B D. D

A. C

Which of the features on this aerial photograph is an oxbow lake? A. C B. B C. A D. D

B. pebbles and cobbles

Which of the following sediment sizes is likely to be transported mostly on the bottom of the stream bed? A. dissolved materials B. pebbles and cobbles C. sticky clay particles D. fine sand