Exam 5: Running Water and Groundwater

More water is evaporated from the ocean than is returned to the ocean by precipitation.

Which of the following is associated with areas of karst topography?

The Platte River crosses the Nebraska sandhills and carries little silt and clay,but moves large amounts of sand.What kind of stream would you predict from this characteristic?

What feature originates where the water table intersects the land surface?

Much of the city of New Orleans is below sea level,yet it was not an ocean when the city was first settled.How did it get below sea level?

Sediment deposition occurs primarily in what part of a river system?

A ________ is the icicle-like speleothem that grows down from the roof of a cavern.

Downcutting (also known as rejuvenation)of a stream may be due to ________.

________ is the volume of voids or open space in a rock or unconsolidated material.

________ refers to sediments deposited from streams.

As a form of flood control,________ involves altering a stream channel to speed the flow of water to prevent it from reaching flood height.

At the head of a delta,the major channel splits into smaller channels that follow different paths to the sea.These smaller channels are known as ________.

________ is the quantity of water flowing past a certain stream cross section per unit time.

________ are characteristics of downcutting streams and a youthful stage of valley evolution.

Gradients usually decrease downstream in a major river system.

The main process that links water in the atmosphere with water on the Earth's surface is ________.

Over time as erosion lowers the landscape a river valley will typically ________.

As a stream changes from its headwaters to its mouth,which of the following is not likely to occur?

On the cutaway sides of the illustration below,areas shaded light represent the zone of aeration,and areas that are darkly shaded represent the zone of saturation.All rock types are aquifers except for the labeled aquitard.On the blanks provided,fill in the name of the labeled features.

Alluvium refers to stream deposits,mainly sand and gravel.