About what percent of Earth's water is fresh water?
a. 8
b. 18
c. 2
d. 15
[Ques. 2] The percentage volume of unoccupied space in a material is called its
a. traction.
b. porosity.
c. permeability.
d. salinity.
[Ques. 3] A material's capacity to transmit fluids is called its
a. permeability.
b. solifluction.
c. drift.
d. porosity.
[Ques. 4] The upper boundary of the region in which the soil is saturated with water is known as the
a. water table.
b. aquifer level.
c. zone of aeration.
d. Moho discontinuity.
[Ques. 5] The natural sequence through which water from the oceans evaporates into the atmosphere and ultimately returns to the oceans is known as the
a. hydrous cycle.
b. aqueous cycle.
c. climactic cycle.
d. hydrologic cycle.
[Ques. 6] Which of the following is not a form of downslope movement?
a. Creep
b. Mudflow
c. Overburden
d. Slump
[Ques. 7] The slow, particle-by-particle movement of weathered debris down a slope is called
a. an avalanche.
b. a landslide.
c. slump.
d. creep.
[Ques. 8] The fast, downslope movement of large blocks of weathered materials is known as a
a. solifluction.
b. slump.
c. rock flow.
d. landslide.
[Ques. 9] The general geologic term for the downslope movement of soil and rock under the influence of gravity is
a. mass wasting.
b. slump.
c. creep.
d. landslide.
[Ques. 10] The driest of Earth's regions are known as
a. hot spots.
b. deserts.
c. wastelands.
d. scablands.
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