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Geog. 1710 Exam 2 (Ch. 9)
Ch. 9 Review Questions
26
Science
Undergraduate 1
10/22/2012

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Term
The hydrologic cycle includes water... (3)
Definition
at the surface of the Earth and in the oceans, in the atmosphere, and at the depth of up to several kilometers below the surface.
Term
TRUE/FALSE?
With regard to the hydrologic cycle, the bulk of the precipitation occurs over land.
Definition
False
Term
TRUE/FALSE?
Most of the water that falls on the continents is derived from the oceans.
Definition
True
Term
The four types of precipitation are...
Definition
rain, fog, dew, and snow.
Term
Precipitation that reaches Earth's surface penetrates the soil surface through the process of...
Definition
infiltration
Term
Precipitation is generally measured with...
Definition
specially constructed gages.
Term
TRUE/FALSE?
It is necessary to place a windshield around a rain gage because without it, the amount of rain trapped by the gage would be more than that which actually fell.
Definition
False
Term
Potential evapotranspiration refers to...
Definition
the amount of water that would evaporate or transpire if it were available.
Term
TRUE/FALSE?
The highest amounts of precipitation in North America occur in the southeast and extreme south.
Definition
True
Term
Transpiration refers to...
Definition
the outward movement of water from plant leaves.
Term
What would decrease the rate at which evapotranspiration occurs?
Definition
Increased humidity.
Term
What can measure the potential evapotranspiration?
Definition
Evaporation pan.
Term
What can measure the actual evapotranspiration?
Definition
Weighting lysimeter.
Term
TRUE/FALSE?
Potential evapotranspiration exceeds actual evapotranspiration.
Definition
Normally true
Term
A deficit is described as...
Definition
The moisture condition that results if precipitation and soil moisture are inadequate to meet potential evapotranspiration demands.
Term
A form of surplus is...
Definition
water detention on the surface.
Term
As transpiration occurs, water enters plant roots because...
Definition
the water pressure in the soil is more than the water pressure in the plant.
Term
As soil moisture reaches ________ point, plant stops transpiration.
Definition
wilting
Term
An aquifer is...
Definition
a water-bearing rock stratum.
Term
TRUE/FALSE?
An unconfined aquifer is recharged by the downward flow of water under the influence of gravity.
Definition
True
Term
The term "cone of depression" refers to...
Definition
a depression in the water table formed by rapid ground water withdraw.
Term
A potential consequence of groundwater over-pumping is... (3)
Definition
1) land subsidence and cracked building foundations
2) compression of the aquifer, resulting in a permanent loss of water storage capacity
3) salt water intrusion
Term
The largest practical potential source of fresh water in North America is...
Definition
groundwater.
Term
TRUE/FALSE?
If the water table reaches the surface of the ground, a spring could developed.
Definition
True
Term
The upper limit of the water that collects in the zone of saturation is called the...
Definition
water table.
Term
TRUE/FALSE?
An artesian aquifer is a confined acquire containing groundwater that will flow upward through a well without the need of pumping.
Definition
True
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