Exam 11: Running Water

Distinguish sheet flow from channel flow.

In addition to dams and levees,what are two other measures that may be taken to control flooding?

The process by which water vapor reenters the atmosphere by evaporation from plants is called ____________________.

Describe where flow velocity is highest in a semi-straight channel.Why is this the case?

The average channel velocity increases downstream where the gradient is lower.

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

What are some of the reasons why running water is important to humans?

In what ways can water be temporarily stored,from a few years to a few thousand years,on the land areas before returning to the oceans?

What is stream piracy? What happens when one stream pirates another?

The ultimate base level is the lowest limit to which a stream or river can erode.

Streams with broad,shallow channels and narrow,deep channels have a higher flow velocity than do those with semi-circular channels.

What are the three main types of marine deltas based on? What are they,and how are they different from each other?

The Mississippi River is an example of channel flow.

A stream erodes material from its banks and bed by:

An uplifted erosional remnant of a floodplain that formed when a stream was flowing at a higher level is called a(n)____________________.

The types of marine deltas that are recognized,based on the relative importance of the processes involved in their formation,are ____________________-dominated,____________________-dominated,and ____________________-dominated.

Briefly explain how a stream might adjust toward an equilibrium state following a heavy rain.

A rill is the precursor to a brook,creek,stream,or river.

Water that returns to the oceans as surface flow from streams is ____________________.

What is/are the source(s)of dissolved load in most streams?