Exam 17: Streams and Floods: the Geology of Running Water

The distinction between a valley and a canyon is ________.

The figure below shows an example of a ________ drainage network.

In uniform sediments with a relatively constant and gentle slope at the surface,a ________ drainage network is expected.

The capacity of a stream depends on its __________.

The deepest part of a curved stream channel,where the flow is fastest,is called the ________.

A stream carrying sediment flows over the solid rock of its channel,polishing the rock and wearing it away.This is an example of __________.

A "bird's foot" delta configuration,similar to that of the Mississippi River delta,forms when the ________.

The figure below shows an example of a ________ drainage network.

In a region with prominent orthogonal sets of joints,a ________ drainage network is expected.

Which of the following scenarios is more likely to cause a flash flood than a slow-onset flood?

Which of the following is MOST likely to result in stream rejuvenation?

The region below a streambed where groundwater flows in the same direction as the stream but at a slower rate is termed the ________ zone.

Contrast the gradient of a typical stream at its headwaters versus its mouth.Sketch the longitudinal profile of this stream.

The stream gradient of most rivers ________.

Differentiate between dissolved load,suspended load,and bed load.

Contrast the drainage patterns in the illustrations below.Why do they differ in appearance?

A stream is ________.

The discharge of a river traveling through a temperate region will typically ________ downstream; the discharge of a river traveling through an arid region will typically ________ downstream.

If a 50-year flood occurs on the Mississippi River this year,what is the probability that a flood of the same magnitude will occur in the following year?

Ephemeral streams ________.