Tennessee Science Grade 7

Chapter 9: Rocks and Minerals

Rocks and Minerals

1
Igneous rocks cannot be formed from __________.
A)magma
B)liquid rock
C)sediments
D)lava
2
__________ rock can form by evaporation.
A)Detrital
B)Chemical
C)Organic
D)Igneous
3
Metamorphic rocks are classified by __________.
A)foliation or non-foliation
B)color and crystal size
C)evaporation or precipitation
D)intrusive or extrusive formation
4
Which of the following is an example of a mineral?
A)water
B)granite
C)coal
D)quartz
5
Crystals are solid materials with __________.
A)atoms in an orderly, repeating pattern
B)several different grain sizes
C)distinct layers or bands
D)glass like, shiny surfaces
6
A non-foliated rock contains __________.
A)no distinct layers or bands
B)hardened lava
C)cemented sediment
D)fossils of tiny organisms
7
Minerals form by all of the following except __________.
A)evaporation
B)metamorphosis
C)cooling of magma
D)precipitation
8
Melted rock cools to form __________ rocks.
A)mineral
B)igneous
C)sedimentary
D)metamorphic
9
A(n) __________ is rare and beautiful.
A)ore
B)mineral
C)rock
D)gem
10
A mineral containing something useful and can be sold for a profit is called a(n) __________.
A)metal
B)gem
C)crystal
D)ore
11
__________ is not an example of a physical property.
A)Luster
B)Color
C)Chemical composition
D)Cleavage and fracture
12
A rock with no grains is formed by __________.
A)precipitation of magma
B)evaporation of lava
C)rapid cooling of lava
D)magma cooling in Earth
13
Sedimentary rocks are made of __________.
A)all answers are correct
B)pieces of other rocks
C)dissolved minerals
D)plant and animal matter
14
Grain size is used to identify __________ rocks.
A)organic
B)detrital
C)metamorphic
D)chemical
15
__________ igneous rock is formed when melted rock cools inside Earth.
A)Intrusive
B)Extrusive
C)Detrital
D)Chemical
16
The rock cycle is not used to illustrate the __________.
A)journey of a rock
B)different types of rocks
C)process of rocks changing from one type to another
D)relationship of rocks to other rocks
17
__________ is an example of an organic rock.
A)Sandstone
B)Quartz
C)Chalk
D)Halite
18
__________ is determined by scratching a mineral sample across an unglazed, white tile.
A)Fracture
B)Color
C)Hardness
D)Streak
19
__________ rocks are formed by heating and squeezing existing rocks.
A)Sedimentary
B)Detrital
C)Metamorphic
D)Igneous
20
Which of the following is not a clue for determining how a mineral forms?
A)presence of layers
B)how the crystals fit together
C)hardness
D)crystal size
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