North Carolina Science Grade 6

Chapter 2: Rocks and Minerals

Rocks and Minerals

1.
All rocks must contain two or more __________.
A)layers
B)crystal sizes
C)minerals
D)grain sizes
2.
Crystals are solid materials with __________.
A)several different grain sizes
B)glass like, shiny surfaces
C)distinct layers or bands
D)atoms in an orderly, repeating pattern
3.
Which of the following characteristics is NOT used to identify unique minerals?
A)hardness
B)presence of a double image
C)magnetism
D)fizzes on contact with acid
4.
A(n) __________ is rare and beautiful.
A)mineral
B)ore
C)gem
D)rock
5.
__________ rocks are formed by heating and squeezing existing rocks.
A)Metamorphic
B)Igneous
C)Sedimentary
D)Detrital
6.
__________ is an example of an organic rock.
A)Quartz
B)Chalk
C)Sandstone
D)Halite
7.
Which of the following is an example of a mineral?
A)coal
B)quartz
C)water
D)granite
8.
__________ is determined by scratching a mineral sample across an unglazed, white tile.
A)Streak
B)Color
C)Hardness
D)Fracture
9.
Which mineral can scratch a piece of glass?
A)gypsum
B)talc
C)feldspar
D)fluorite
10.
__________ igneous rock is formed when melted rock cools inside Earth.
A)Intrusive
B)Extrusive
C)Detrital
D)Chemical
11.
Foliated rocks are composed of __________.
A)large grained particles
B)distinct layers or bands
C)evaporated chemicals
D)organic remains
12.
Which of the following is not a clue for determining how a mineral forms?
A)crystal size
B)presence of layers
C)hardness
D)how the crystals fit together
13.
A mineral containing something useful and can be sold for a profit is called a(n) __________.
A)gem
B)crystal
C)metal
D)ore
14.
Place the grain sizes in order from smallest to largest.
A)silt, clay, sand, pebbles
B)clay, silt, sand, pebbles
C)silt, pebbles, sand, clay
D)clay, sand, silt, pebbles
15.
__________ rock can form by evaporation.
A)Detrital
B)Igneous
C)Chemical
D)Organic
16.
__________ is not an example of a physical property.
A)Color
B)Chemical composition
C)Cleavage and fracture
D)Luster
17.
The rock cycle is not used to illustrate the __________.
A)different types of rocks
B)process of rocks changing from one type to another
C)journey of a rock
D)relationship of rocks to other rocks
18.
Igneous rocks cannot be formed from __________.
A)liquid rock
B)sediments
C)lava
D)magma
19.
Melted rock cools to form __________ rocks.
A)sedimentary
B)mineral
C)metamorphic
D)igneous
20.
Pearly, glassy, dull, and earthy are terms used to describe __________.
A)color
B)fracture
C)luster
D)streak
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