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
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82. The most abundant mineral group in the Earth’s crust are the _______
a. oxides/b. carbonates
c. sulfides/d. halides
e. silicates - silicates
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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
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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
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85. The resistance of a mineral to abrasion is known as
a. cleavage/b. hardness
c. resistance/d. conchoidal
e. fracture
- hardness
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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
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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
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88. On Moh’s hardness scale, is the softest mineral.
a. talc
b. calcite
c. quartz
d. diamond
e. feldspar - talc
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89. On Moh’s scale of hardness, __________ is the hardest mineral.
a. talc/b. calcite
c. quartz/d. diamond
e. feldspar
- diamond
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90. By definition, rocks are aggregates of one or more minerals.
a. True
b. False - true
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91. Tenacity is the ability of a mineral to bend and return to its original shape.
a. True
b. False
- true
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92. Most minerals have a higher specific gravity than water
a. True
b. False - true
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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
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94. The presence of the mineral quartz can be determined by performing the chemical/acid test.
a. True
b. False - false
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95. The micas muscovite and biotite exhibit one direction of cleavage.
a. True
b. False
- true
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96. The mineral magnetite is magnetic due to the high concentration of carbon atoms present in the sample.
a. True
b. False
- false
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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
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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
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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
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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