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Minerals Part II
Test Description: 8th grade OK PASS
Instructions: Answer all questions to get your test result.
1) Muscovite mica will peel off in flat sheets. This is an example of the physical characteristic called ____.
A
cleavage
B
hardness
C
fracture
D
streak
2) Calcite will scratch gypsum. This is an example of the physical characteristics called ____.
A
cleavage
B
streak
C
hardness
D
fracture
3) The properties of being ____ make a diamond a gemstone.
A
rare and profitable
B
rare and beautiful
C
useful and profitable
D
easy to obtain and beautiful
4) If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as an ore. This happens because ____.
A
the demand for the mineral has decreased
B
the mineral is disolved in HCl
C
the mineral can no longer be mined at a profit
D
the mineral has lost its usefulness
5) A gem is _________ and _________
A
beautiful, rare
B
hard, shiney
C
ugly, furry
D
profitable, useful
6) color of a powdered mineral
A
streak
B
color
C
cleavage
D
fracture
7) how light is reflected from a mineral
A
ores
B
fracture
C
color
D
luster
8) the tendency of a mineral to break along a smooth, flat surface
A
ores
B
fracture
C
hardness
D
cleavage
9) the tendency of minerals to break with rough or jagged surfaces
A
cleavage
B
streak
C
hardness
D
fracture
10) minerals mined because they contain useful substances
A
luster
B
hardness
C
color
D
ores
*select an answer for all questions
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