A local aquiclude within a larger aquifer results in a(n) ____.

A local aquiclude within a larger aquifer results in a(n) ____.
 A)cone of depression
 B)perched water table
 C)artesian aquifer
 D)zone of aeration
 E)zone of saturation

Question 2

Some lava flows show a pattern of columns bounded by fractures. These columns are usually ____-sided.
 A)three
 B)six
 C)eight
 D)twelve
 E)twenty

Question 3

What does the appearance of red beds in the geologic record indicate about the atmosphere?

Question 4

Artesian-pressure surfaces slope because ____.
 A)of friction
 B)of gravity
 C)the aquifer slopes
 D)of the overlying aquicludes
 E)the amount of recharge varies

Question 5

The dominant gas emitted from volcanoes is ____.
 A)water vapor
 B)carbon dioxide
 C)sulfur dioxide
 D)hydrogen fluoride
 E)carbon monoxide

Question 6

What are the two major rock types that characterize Archean shield areas?

Question 7

Where does groundwater discharge naturally?
 A)only in the ocean
 B)only in springs
 C)only in streams
 D)only in aquifers
 E)wherever the groundwater table intersects the ground surface