Section #: 6.2
Types of Sedimentary Rocks
Practice Test
1.
Why are sedimentary rocks important?
a.
They contain fossils.
b.
They provide building stones.
c.
They contain gemstones of high value.
d.
They provide many natural resources and evidence of Earth's past.
Hint
2.
What would happen to the pond in the figure if the freshwater inflow stream and path to the ocean disappeared?
a.
All life will stop living in the pond.
b.
Water would come from somewhere else.
c.
The entire lake would eventually evaporate away, leaving only evaporites.
d.
It would produce extrusive igneous rocks.
Hint
3.
Which of the following is an example of an evaporite?
a.
coal
b.
rock salt
c.
shale
d.
breccia
Hint
4.
The grains of a breccia most likely traveled __________ than the grains in a conglomerate.
a.
a shorter distance
b.
a different distance
c.
a farther distance
d.
the same distance
Hint
5.
Sedimentary layers with distinct grain sizes progressing from larger to smaller are called __________.
a.
layered deposits
b.
graded beds
c.
glacial deposits
d.
unsorted deposits
Hint
6.
How are clastic rocks classified?
a.
metamorphic grade
b.
mineralogy
c.
particle size
d.
method of depostion
Hint
7.
A __________ ranges in grain size from 2 mm to 0.062 mm.
a.
cobble
b.
boulder
c.
sand grain
d.
silt grain
Hint
