Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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As magma cools, its ____ combine into compounds that form a crystal structure,
and it becomes a mineral.
a. | atoms | c. | electrons | b. | elements | d. | none of the
above |
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2.
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Minerals are comprised of one or more ____.
a. | colors | c. | rocks | b. | elements | d. | structures |
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3.
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A collector of minerals would want a sample of ____.
a. | salt | c. | sugar | b. | coal | d. | wood |
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4.
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The largest group of rock-forming minerals consists of the ____.
a. | quartzes | c. | silicates | b. | halides | d. | oxides |
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5.
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Muscovite mica will peel off in flat sheets. This is an example of the physical
characteristic called ____.
a. | hardness | c. | fracture | b. | streak | d. | cleavage |
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6.
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Calcite will scratch gypsum. This is an example of the physical characteristics
called ____.
a. | hardness | c. | fracture | b. | streak | d. | cleavage |
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7.
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The properties of being ____ make a diamond a gemstone.
a. | rare and beautiful | c. | easy to obtain and beautiful | b. | useful and
profitable | d. | rare and
profitable |
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8.
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As magma cools, its atoms arrange themselves to form a _____________
structure.
a. | chemical | c. | crystalline | b. | loose | d. | none of the
above |
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9.
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All minerals are
a. | liquids | c. | rocks | b. | inorganic | d. | organic |
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10.
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 According to the chart, oxygen and
silicon make up ______ percent of the Earth’s crust. a. | 46.6 % | c. | over 74 % | b. | 27.7 % | d. | over 100 % |
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11.
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 Although 90 elements occur naturally in
the Earth’s crust, this figure shows that 98 percent of the crust is made up of how many
elements?
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12.
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A Mineral is an inorganic _____ with a unique crystal structure.
a. | atomic | c. | magma | b. | solid | d. | crystal |
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13.
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Some minerals are formed when ____ cools.
a. | an atom | c. | magma | b. | a solid | d. | the crystals |
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14.
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When liquid evaporates, atoms of any dissolved minerals stay behind and form
____, such as desert roses.
a. | atoms | c. | crystals | b. | magma | d. | organic matter |
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15.
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Friedrich Mohs created a scale that is used to measure the ____________ of
minerals.
a. | color | c. | luster | b. | hardness | d. | cleavage |
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16.
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 The hardness of quartz is 7. This indicates
that quartz will scratch all of the following minerals EXCEPT ____. a. | talc | c. | topaz | b. | apatite | d. | calcite |
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17.
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 One of the softest minerals is ____. a. | topaz | c. | talc | b. | quartz | d. | amethyst |
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18.
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The two most common elements in the Earth's crust are
a. | nitrogen and oxygen. | c. | silicon and oxygen. | b. | carbon and silicon. | d. | oxygen and
carbon. |
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19.
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When quartz breaks it forms a curved, irregular pattern called
a. | luster. | c. | fracture. | b. | cleavage. | d. | hardness. |
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20.
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____ is the most common silicate mineral group in the Earth's crust.
a. | Calcite | c. | Mica | b. | Feldspar | d. | Quartz |
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21.
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A mineral's streak
a. | is more accurate than color in identifying a mineral. | b. | will tell you the
mineral's specific gravity. | c. | is the same as a luster
test. | d. | shows the mineral's crystal structure. |
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22.
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Which statement best describes minerals?
a. | Rocks make minerals. | c. | Minerals can be solid, liquid or gas. | b. | Minerals make
rocks. | d. | Crystals made by
people are minerals. |
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23.
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The color of the powder that a mineral leaves on a piece of white, unglazed
porcelain is called the mineral's
a. | hardness. | c. | streak. | b. | luster. | d. | scratch. |
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24.
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Which of the following physical properties can be expressed in numbers?
a. | luster | c. | color | b. | hardness | d. | reaction to
acid |
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25.
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Metallic and nonmetallic are descriptions of a mineral's
a. | streak. | c. | color. | b. | luster. | d. | cleavage. |
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