Sedimentary and Metamorphic Rocks
Practice Test
1.
What is the process called that changes sediments to sedimentary rocks?
a.
weathering and metamorphism
b.
lithification
c.
erosion
d.
solidification
2.
A glacial deposit often is __________.
a.
cross-bedded
b.
unsorted
c.
rippled
d.
well-sorted
3.
Gravity, water, wind, and ice all are agents of __________.
a.
compaction
b.
erosion
c.
lithification
d.
cementation
4.
What do different grades of metamorphic rocks reflect?
a.
relative amount of compaction
b.
relative amount of pressure only
c.
relative amount of temperature and cementation
d.
relative amount pressure and temperature
5.
How are clastic rocks classified?
a.
method of depostion
b.
metamorphic grade
c.
particle size
d.
mineralogy
6.
Sedimentary layers with distinct grain sizes progressing from larger to smaller are called __________.
a.
unsorted deposits
b.
graded beds
c.
layered deposits
d.
glacial deposits
7.
Which of the following is an example of an evaporite?
a.
breccia
b.
rock salt
c.
shale
d.
coal
8.
The grains of a breccia most likely traveled __________ than the grains in a conglomerate.
a.
the same distance
b.
a farther distance
c.
a different distance
d.
a shorter distance
9.
What would happen to the pond in the figure if the freshwater inflow stream and path to the ocean disappeared?
a.
The entire lake would eventually evaporate away, leaving only evaporites.
b.
It would produce extrusive igneous rocks.
c.
All life will stop living in the pond.
d.
Water would come from somewhere else.
10.
What is the most likely way for rock at the bottom of the land in the figure to be exposed to sunlight.
a.
fossil digging
b.
metamorphism
c.
weathering and erosion
d.
intrusive cooling
11.
According to the figure, which is NOT a factor in determining regional metamorphism grades?
a.
time
b.
heat
c.
depth
d.
pressure
12.
What process reduces the pore space in sediments due to the weight of overlying sediments?
a.
erosion
b.
cementation
c.
compaction
d.
metamorphism
13.
__________ metamorphic rocks are formed at high temperatures and medium to low pressures.
a.
Hydrothermal
b.
Contact
c.
Low-grade
d.
Regional
14.
Before metamorphism, marble was what type of rock?
a.
limestone
b.
schist
c.
rock salt
d.
siltstone
15.
What type of metamorphic rock is a result of increased pressure and temperature affecting large regions of Earth's crust?
a.
regional metamorphism
b.
foliated metamorphism
c.
hydrothermal metamorphism
d.
contact metamorphism
