Developing low pressure areas generally have __________ air near the surface and __________
air aloft.
a. converging, diverging
b. diverging, converging
c. converging, converging
d. diverging, diverging
a
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Water pressure becomes an important factor in increasing landslide danger when ____
a. ?slope surfaces become saturated b. ?pressure increases with depth c. ?pore spaces are filled with water d. ?the water has significant clay content e. ?the slope is composed of clays
In a translational slide, the descending mass ________.
A. is moving and circulating within the flowing mass, behaving as a viscous fluid B. moves as a perfectly rigid block on top of a liquid layer C. slides as a generally intact block down a curved failure surface D. moves along a plane approximately parallel to the slope of the surface E. simply moves from one location to another, without specifying the mode of motion
What region of the United States has the highest summer dust concentrations?
A) northwest B) southwest C) northeast D) southeast
Examples of valuable nonmetallic minerals extracted by mining are ________
A) gold, platinum, copper B) sand, gravel, phosphate C) nitrogen, hydrogen, neon D) radon, radium, sodium E) lead, cadmium, mercury