Section #: 21.2
Relative-Age Dating of Rocks
Practice Test
1.
The principle of _________ states that an intrusion or fault is younger than the rocks it cuts across.
SC.D.1.4.3
a.
uniformitarianism
b.
cross-cutting relationships
c.
original horizontality
d.
superposition
Hint
2.
Which feature shown in the figure is the oldest?
SC.D.1.4.3
a.
Q
b.
H
c.
L
d.
P
Hint
3.
What principle of geology states that sedimentary rocks are deposited horizontally or nearly horizontally?
SC.D.1.4.3
a.
superposition
b.
uniformitarianism
c.
cross-cutting relationships
d.
original horizontality
Hint
4.
What geologic principle states that in an undisturbed rock sequence, the oldest rocks are on the bottom and the youngest are on the top?
SC.D.1.4.3
a.
uniformitarianism
b.
original horizontality
c.
cross-cutting relationships
d.
superposition
Hint
5.
If a horizontal Devonian shale directly overlies a horizontal Ordovician limestone, what is the surface between the strata called?
SC.D.1.4.3
a.
a disconformity
b.
an angular unconformity
c.
an erosional surface
d.
a nonconformity
Hint
6.
The __________ states that the processes that have been occurring today have been occurring since Earth formed.
SC.D.1.4.4
a.
principle of cross-cutting relationships
b.
principle of superposition
c.
principle of original horizontality
d.
principle of uniformitarianism
Hint
7.
What does a disconformity in a sedimentary rock sequence represent?
SC.D.1.4.3
a.
a flood event
b.
a gap in the rock record
c.
duplicated strata in the rock record
d.
a volcanic eruption
Hint
