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Which of the following units is appropriate for measureing the veolcity of groundwater?
d. cm per day
Why does groundwater flow slower than streams?
c. Streams are unimpeded, but ground water must seep through pores
c. the percentage of bedrock that is open space
what value is a reasonable porosity for gravel?
c. 20 percent
The porosity of clay may reach as high as
a. 50 percent
Which factor has the greatest impact on permeability
b. pore size
What force keeps water in the soil after precipitaition?
c. molecular attraction
Soil contains large amount of
What force puuls water out of the soil into the ground water?
Water moves through the saturated zone via
Water may enter a lake from below, opposing gravity, if
c. the water flowed from high elevation in the saturated zone
Water moves through the saturated zone in
b. narrow, parallel paths
The water table intersects the Earth's surface at
Particles of clay have a diameter of
Most ground water enters a stream
b. from beneath
Groundwater 23 (How ground water - movement)