Indiana Science Grade 7

Chapter 17: Minerals

Minerals

1.
Large crystals can form when magma __________.
A)melts
B)cools slowly
C)cools quickly
D)erupts from a volcano
2.
Salt from evaporated seawater has been formed from __________.
A)magma
B)artificial means
C)volcanoes
D)solution
3.
Where do most useful minerals occur in nature?
A)in seawater
B)in freshwater
C)in volcanoes
D)in ores
4.
__________ is a solid in which the atoms are arranged in closely repeating patterns.
A)A mineral
B)An ore
C)An element
D)A crystal
5.
The specific gravity of a mineral compares its weight with an equal volume of __________.
A)diamond
B)rock
C)water
D)air
6.
Metallic elements dissolved in fluids form in __________.
A)ponds
B)veins
C)magma
D)ores
7.
Some gems have __________.
A)fracture
B)a crystalline structure
C)no color
D)a low Mohs number
8.
What is the easiest way to tell if a sample is gold or pyrite?
A)streak
B)luster
C)appearance
D)hardness
9.
The Hope diamond, which is now at the Smithsonian, is said to __________.
A)be an impure diamond
B)be one of the smallest diamonds in the world
C)bring its owner bad luck
D)bring its owner good fortune
10.
An inorganic crystalline solid is formed in a lab. Why is it not a mineral?
A)It is a solid.
B)It is a crystal.
C)It is not naturally occurring.
D)It is inorganic.
11.
Why are gems valuable?
A)They are rare.
B)They are crystals.
C)They are minerals.
D)They are hard.
12.
Amethyst is a variation of which mineral?
A)diamond
B)garnet
C)topaz
D)quartz
13.
Which is an industrial use of diamonds?
A)in watches
B)in lasers
C)as cutting tools
D)in jewelry
14.
You find a red gemstone that is from Sri Lanka. What gem is this most likely?
A)emerald
B)ruby spinel
C)sapphire
D)topaz
15.
A mineral that is hard __________.
A)is hard to scratch
B)can be scratched with your fingernail
C)will not break
D)will not shatter
16.
All of the following are some other property used to identify minerals except __________.
A)magnetism
B)boiling point
C)the ability for the mineral to create a double image
D)reaction to hydrochloric acid
17.
Glass is not a crystal because __________.
A)it is a solid
B)it fractures
C)it is not crystalline
D)it is transparent
18.
All minerals are __________.
A)naturally occurring
B)made in a lab
C)organic solids
D)unordered
19.
What are the two most common elements in minerals?
A)iron and oxygen
B)carbon and silicon
C)oxygen and silicon
D)oxygen and sulfur
20.
Titanium is useful because it has __________.
A)a high density and low durability
B)a low density and high durability
C)a low Mohs number
D)a colorless streak
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