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Geologic Time Scale 2
Test Description: Review Geologic Time.
Instructions: Answer all questions to get your test result.
1) Relative dating of rock layers tells us that the deeper we dig, _______.
A
the harder the rocks get
B
the more porous the rocks get
C
the older the rocks get
D
the younger the fossils
2) Describe absolute age.
A
how old an intrusion is
B
how long ago the sediments settled out and formed rock
C
number of years that have passed since the rock formed. It provides the rock with a specific age.
D
the age of a fossil
3) Which division on the geologic time scale is the shortest?
A
period
B
eon
C
era
D
epoch
4) Which type of dating method can be used on rock layers by applying the Law of Superposition?
A
radiometric dating
B
relative dating
C
radioactive dating
D
absolute dating
5) The ________ states that layers of sediment were originally deposited horizontally under the action of gravity.
A
Law of Superposition
B
Law of Horizontality
C
Law of Cross-Cutting
D
Uniformitarianism
6) Trilobites are good __________ fossils because they were abundant and widespread geographically.
A
index
B
trace
C
mold
D
cast
7) A hardened layer of magma beneath the Earth's surface:
A
an intrusion
B
an unconformity
C
an extrusion
D
a fault
8) The Triassic, Jurassic, and Cretaceous periods occurred in the ___________ Era.
A
Precambrian Era
B
Cenozoic Era
C
Paleozoic Era
D
Mesozoic Era
9) The earliest form of life known on Earth was
A
leafy plants
B
single-celled organisms
C
multi-celled organisms
D
fossils
10) Which Virginia province are we located in?
A
Valley and Ridge
B
Appalachian Plateau
C
Blue Ridge
D
Piedmont
11) Which Virginia province is the western most province?
A
Piedmont
B
Coastal Plain
C
Appalachian Plateau
D
Valley and Ridge
12) Which of the Virginia provinces below has Igneous and Metamorphic Rocks
A
Piedmont
B
Blue Ridge
C
Coastal Plain
D
Valley and Ridge
13) The biggest unit in the geologic time scale is the:
A
eon
B
period
C
epoch
D
era
14) What is the primary purpose of index fossils?
A
They help scientists determine the relative age of rocks
B
They provide scientists with evidence for the theory of evolution by natural selection
C
They help scientists determine the absolute age of sedimentary rocks
D
They help scientists identify mass extinctions in Earth’s history
15) Eras are broken into:
A
eons
B
epochs
C
periods
D
ages
16) What is the name of the epoch in which we live?
A
Holocene
B
Quaternary
C
Neogene
D
Cenozoic
17) A fossil that is widespread and found during the same time periods that can be used to help identify the relative ages of rocks.
A
cast
B
trace
C
index
D
mold
18) Rocks were first created during this geologic time division:
A
Paleozoic era
B
Precambrian eon
C
Mesozoic era
D
Cenozoic era
*select an answer for all questions
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