WorksheetsChapter 3 Test - Rocks
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Intrusive igneous rocks are often coarse-grained because ________.
a)
A) the pressures at depth cause them to have a rough texture
b)
B) the slow cooling at depth allows large crystals to grow
c)
C) the uplift process that exposes the rock fractures them and makes them rough
d)
D) small holes from escaping gases leave them rough and coarse
2.
The texture of an igneous rock ________.
a)
A) is controlled by the composition of magma
b)
B) determines the color of the rock
c)
C) is caused by leaching
d)
D) records the rock's cooling history
3.
The first step in turning a rock into a sediment is ________.
a)
A) gravity and erosional agents (wind, water, etc.) remove material from the parent rock
b)
B) rock is broken into small pieces during the transportation phase
c)
C) weathering alters the rock
d)
D) compaction
4.
Which of the following is an economically important sedimentary rock?
a)
A) marble
b)
B) coal
c)
C) pumice
d)
D) calcite
5.
Detrital sedimentary rocks are typically classified on the basis of their ________.
a)
A) composition
b)
B) texture
c)
C) provenance
d)
D) particle size
6.
For a geologist, the most important characteristic of a sedimentary rock is its ________.
a)
A) texture
b)
B) composition
c)
C) layering
d)
D) lithology
7.
Metamorphism occurs when a rock ________.
a)
A) experiences conditions that include high temperatures
b)
B) experiences conditions that include high pressures
c)
C) experiences conditions that are significantly different from those that formed the rock
d)
D) experiences conditions that are similar to those that formed the rock
8.
In an area where the temperature increase with depth averages 20°C per kilometer, the temperature at a depth of 5 kilometers would be ________.
a)
A) 100°C
b)
B) 200°C
c)
C) 50°C
d)
D) 20°C
9.
Under the right circumstances, by the process of weathering and erosion, any rock can be transformed into ________.
a)
A) another type of rock
b)
B) sediment
c)
C) magma
d)
D) a different rock type, sediment, or magma
10.
One magma can produce ________ type(s) of igneous rocks having different mineral compositions.
a)
A) only one
b)
B) several different
c)
C) hundreds of different
d)
D) only detrital
11.
Sedimentary rocks make up approximately ________ percent of the rocks in Earth's crust.
a)
A) 50
b)
B) 60
c)
C) 65
d)
D) 75
12.
The particles in breccia are primarily ________ sized.
a)
A) boulder
b)
B) gravel
c)
C) sand
d)
D) silt
13.
Igneous rocks are classified on the basis of what two main characteristics?
a)
A) composition and temperature
b)
B) gas content and acidity
c)
C) temperature and acidity
d)
D) texture and mineral composition
14.
Probably the single most characteristic feature of sedimentary rocks is ________.
a)
A) fossils
b)
B) mud cracks
c)
C) ripple marks
d)
D) strata or beds
15.
When a metamorphic rock exhibits a layered or banded appearance, it is said to exhibit a(n) ________ texture.
a)
A) bedded
b)
B) fissile
c)
C) foliated
d)
D) layered
100 %
