Answers In Creation Online Geology Curriculum

Geology Chapter 3 Test


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1: The chemical formula SiO2 (One atom of silicon, two oxygen ataoms, is what mineral?

2: Gemstones produced in a laboratory are minerals.
True
False
3: Seashells made by marine organisms are minerals.
True
False
4: Number 8 on the Mohs scale of hardness is...

5: The shape of a crystal is governed by
the size of the molecules
the internal molecular structure of the crystal
the temperature at which the crystal forms
the number of oxygen atoms
6: Conchoidal fractures appear
as jagged surfaces
as curved surfaces
as surfaces which form right angles to each other
7: A mineral may have multiple cleavage zones.
True
False
8: Specific gravity is...
the ratio between oxygen atoms and all other atoms
the force of gravity exhibited upon one gram of the mineral at the earth's surface
the ratio between the weight of the mineral and the weight of an equal volume of water
9: The specific gravity of quartz is
2.0
2.65
3.1
1.5
10: The size of a crystal depends on
the length of time it takes the molten rock to cool
the force of magnetism exhibited upon the molten rock
the amount of water present
11: Minerals always exhibit the same color.
True
False
12: The process of crystal growth is called...
depostion
crystallization
solidification
13: A crystal starts to form in a melt...
when the amount of water in the melt is below 4 percent
when the temperature cools below the melting point for the mineral
when the melt stops moving and becomes trapped in one location
14: Pyrite is also known as
trick gold
nugget gold
fool's gold
quartz
15: What is the melting point of quartz?
2,000 degrees centigrade
865 degrees centigrade
1,500 degrees centigrade
1,650 degrees centigrade
16: Limestone reacts to hydrochloric acid by giving off...
oxygen
carbon dioxide gas
hydrogen
17: Fluorescent minerals respond to
infrared light
ultraviolet light
intense light
hydrochloric acid
18: The most abundant mineral group on earth are the
carbonates
metals
silicates
evaporites
19: Number 3 on the Mohs scale of hardness is...

20: How many distinct crystal classes are there?
72
16
32
3

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