Unit 38 Review Questions

. Which of the following leads to higher infiltration rates?

Sandy soil

Clay soil

Saturated soil

Heavy precipitation rate

. Which of the following will have the lowest infiltration rate after an hour of steady rain falling at the rate of .4 inches per hour?

Dense forest

Open forest

Meadow

Plowed field

. The velocity of water in a stream:

Varies little from day to day or week to week

is independent of gravity

is highest just below the surface in the center of the channel

is highest just above the bottom in the center of the channel

. Field capacity:

refers to water that is unavailable to plants

is the maximum amount of water soil can hold through capillary tension

is important for timber management, but not crop agriculture

involves the part of the lithosphere located in the saturated zone

. The water table:

is typically flat, regardless of the overlying topography

sits atop the zone of saturation

can only intersect the surface at the bottoms of valleys

rarely varies during the course of a year

. You would expect to find the least porous material in:

an aquiclude

a confined aquifer

an unconfined aquifer

the vadose zone

. A cone of depression occurs when:

a well is located too close to the ocean

the water table intersects the Earth's surface

a geyser connected to a hot spring recharges for another eruption

a well creates a local lowering of the water table

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