Section #: 6.2
Types of Sedimentary Rocks
Practice Test
1.
Sedimentary layers with distinct grain sizes progressing from larger to smaller are called __________.
a.
layered deposits
b.
graded beds
c.
unsorted deposits
d.
glacial deposits
Hint
2.
A __________ ranges in grain size from 2 mm to 0.062 mm.
a.
sand grain
b.
cobble
c.
boulder
d.
silt grain
Hint
3.
How are clastic rocks classified?
a.
method of depostion
b.
metamorphic grade
c.
mineralogy
d.
particle size
Hint
4.
Which of the following is an example of an evaporite?
a.
breccia
b.
shale
c.
rock salt
d.
coal
Hint
5.
The grains of a breccia most likely traveled __________ than the grains in a conglomerate.
a.
a different distance
b.
a shorter distance
c.
a farther distance
d.
the same distance
6.
Why are sedimentary rocks important?
SC.D.1.4.3
a.
They contain fossils.
b.
They provide building stones.
c.
They provide many natural resources and evidence of Earth's past.
d.
They contain gemstones of high value.
Hint
