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Glossary of esci 81-100

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81. Which of the following is NOT a characteristic of minerals?
c. definite chemical composition
d. can exists as either a liquid or as a solid
e. a unique set of physical properties






can exists as either a liquid or as a solid
82. The most abundant mineral group in the Earth’s crust are the _______
a. oxides/b. carbonates
c. sulfides/d. halides
e. silicates


silicates
83. Igneous rocks that are light in color tend to have more silicon and oxygen compared to darker igneous rocks, which have more magnesium and iron.
a. True
b. False





true
84. The appearance or quality of light reflected from the surface of a mineral is called
a. sheen/b. fluorescence
c. streak/d. color
e. luster


luster
85. The resistance of a mineral to abrasion is known as
a. cleavage/b. hardness
c. resistance/d. conchoidal
e. fracture






hardness
86. Overuse of groundwater supplies can result in:
a. dry wells
b. sink holes and land subsidence
c. salt-water intrusion
d. all of the above
e. none of these




all of the above
87. The most variable diagnostic property of minerals such as quartz is
a. hardness/b. crystal form/
c. luster/d. specific gravity
e. color






color
88. On Moh’s hardness scale, is the softest mineral.
a. talc
b. calcite
c. quartz
d. diamond
e. feldspar




talc
89. On Moh’s scale of hardness, __________ is the hardest mineral.
a. talc/b. calcite
c. quartz/d. diamond
e. feldspar






diamond
90. By definition, rocks are aggregates of one or more minerals.
a. True
b. False

true
91. Tenacity is the ability of a mineral to bend and return to its original shape.
a. True
b. False





true
92. Most minerals have a higher specific gravity than water
a. True
b. False

true
93. Groundwater shortages can be alleviated by:
a. Using less groundwater (conservation)
b. Relying on surface water supplies
c. Drilling more wells
d. Both a and b
e. None of the above








both a and b
94. The presence of the mineral quartz can be determined by performing the chemical/acid test.
a. True
b. False

false
95. The micas muscovite and biotite exhibit one direction of cleavage.
a. True
b. False



true
96. The mineral magnetite is magnetic due to the high concentration of carbon atoms present in the sample.
a. True
b. False





false
97. Before you can drill a well for groundwater, you must know the depth and fluctuation of the water table.
a. True
b. False

true
98. Three major zones of earthquakes are located along the:
a. mid-oceanic ridge
b. circum-Pacific belt
c. Eurasian belt
d. all of the above
e. none of the above




all of the above
99. The degree of destruction caused by an earthquake is influenced by ___
a. ground type
b. dist from the earthquake
c. building design
d. ground type and building design
e. ground type, distance from the earthquake, and building design




ground type, distance from the earthquake, and building design
100. It is now impossible for seismologists to predict an earthquake to within a few weeks, or at most a few months, of its occurrence.
a. True
b. False

true

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