Geography 1 – Chapter 6 H/W

Excess surface water percolates through the zone of ________ to reach the zone of ________ and the water table.
aeration; saturation

Which of the following is true regarding the Colorado River?
All of these are true.

Approximately what percent of the U.S. population derives a portion of its fresh water from groundwater sources?
50 percent

Ground water pollution that our generation creates will not be a problem in the future (decades to centuries) because it is easy to clean an aquifer once it is polluted.
False

In the hydrologic cycle, PRECIP over the land is greater than PRECIP over the oceans.
False

If the potentiometric surface reaches the surface of the ground, a spring will develop.
True

The water in a confined aquifer is under pressure of its own weight, creating a pressure level called the
potentiometric surface.

Which of the following is true of the distribution of land and water on Earth?
The Southern Hemisphere is dominated by water.

Water could be pumped faster from a geologic unit composed of sand than from one composed of clay.
True

Which of the following is correctly matched?
78 percent of precipitation

Precipitation normally refers to
rain, sleet, snow, and hail.

In order to protect aquifers from pollution, the bottoms of waste dumps should be lined with
clay.

Precipitation that reaches Earth’s surface penetrates the soil surface through the process of
infiltration.

The High Plains aquifer
received much of its water from melting glaciers in the past.

The largest portion of fresh water today is located in
ice caps and glaciers.

The quantity of water on earth is constantly changing, as shown by changes in sea level.
False

Which of the following is true?
World water supplies per person have shrunk by 1/3 since 1970.

The line of contact between the zone of aeration and the zone of saturation is known as the
water table.

The ten largest rivers in the world combined, in terms of discharge, exceed the total groundwater resource.
False

Which of the following water withdrawal habits do developing nations exhibit?
They withdraw the greatest amounts for agriculture.

A water-bearing rock stratum is called a/an
aquifer.

Other than ice sheets and glaciers, the largest repository of fresh water is located in
groundwater.

The term “cone of depression” refers to
a depression in the water table formed by rapid ground water withdrawal.

Which of the following is an example of the consumptive use of water?
water that evaporates from an irrigated field

Which of the following is a potential source of ground water pollution?
all of these

On a hot day, a tree can transpire hundreds of liters of water.
True

Of the average precipitation over the lower 48 states, what percentage evaporates and transpires on the average per day?
71 percent

Atmospheric water that is carried from the ocean to the land is balanced by
the combination of all of these.

This region of the High Plains aquifer is suffering the least from groundwater mining
south-central Nebraska.

Approximately what percentage of our bodies is comprised of water?
70 percent

Water demand is increasing at ________ rate of population growth.
double the

The term “ground water mining” refers to
the removal of ground water at a rate faster than that at which it can be replaced.

Which of the following would make the best aquifer?
uncemented sand that is loosely compacted

Which of the following are true?
All of these are true.

The largest practical potential source of fresh water in North America is
groundwater.

The upper limit of water that collects in the zone of saturation is the water table.
True

This activity uses the least amount of withdrawn water in the United States
industry-mining.

Which of the following is not putting additional pressure on the water resources of the Colorado River?
reduced water allocations

The hydrologic cycle includes water
all of these are involved in the hydrologic cycle

Of the following regions, which is most vulnerable to water scarcity?
India

They withdraw the greatest amounts for agriculture. Which of the following water withdrawal habits do developing nations exhibit? exotic streams The Nile and Colorado rivers are examples of… WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR …

. When does a cone of depression form? When withdrawal exceeds recharge. Which condition may result in surface subsidence? Withdrawal exceeds recharge. WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my …

How much of Earth’s liquid freshwater is found in groundwater? 33 percent 60 percent 78 percent 94 percent Which best describes the difference between a “gaining” stream and a “losing” stream? Gaining streams give water to the groundwater supply, whereas …

Worldwide, the largest percentage of freshwater readily available to humans is stored in _______. pore spaces between rocks and sediments Which of the following materials is most readily dissolved by water? Calcite WE WILL WRITE A CUSTOM ESSAY SAMPLE ON …

Ice glaciers contain how much ground water 84% Groundwater represents largest reservoir of freshwater available to humans WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample Zone of soil moisture …

Cone Of Depression Occurs in an aquifer when groundwater is pumped from a well. In an unconfined aquifer (water table), this is an actual depression of the water levels. Picture http://www.kalkaskacounty.net/media/planningeduc/tn_gwa15.jpg

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