Florida Science Grade 7

Chapter 8: Rocks and Minerals

Standardized Test Practice

1
What rock forms when lava cools so fast that crystals do not have time to form? SC.D.1.3.1
A)obsidian
B)bauxite
C)granite
D)gabbro
2
Which mineral property is found when the mineral is scratched against an unglazed tile ? SC.D.1.3.1
A)streak
B)hardness
C)cleavage
D)luster
3
Which mineral is the most abundant in Earth's crust? SC.D.1.3.1
A)quartz
B)calcite
C)gypsum
D)feldspar
4
What is an inorganic, solid material found in nature? SC.D.1.3.1
A)mineral
B)ore
C)rock
D)gem
5
Which igneous feature is formed when magma is forced into layers parallel to the surrounding rock layers? SC.D.1.3.1
A)dike
B)batholith
C)neck
D)sill
6
Which type of sedimentary rock is composed mostly of clay-sized particles? SC.D.1.3.1
A)shale
B)sandstone
C)conglomerate
D)siltstone
7
Which process creates sedimentary rock from sediment?

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SC.D.1.3.1
A)heat and pressure
B)compaction and cementation
C)weathering and erosion
D)melting
8
Which type of rock forms from cooling magma inside Earth?

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SC.D.1.3.1
A)sedimentary
B)chemical
C)igneous
D)metamorphic
9
Which single country produced the most gold in 2002?

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SC.D.1.3.1
A)United States
B)Australia
C)South Africa
D)Indonesia
10
Which is an example of an organic sedimentary rock? SC.D.1.3.1
A)coal
B)sandstone
C)gabbro
D)slate
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