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Geologic Time Scale Test Review
Test Description: Complete the review to prepare for your test tomorrow.
Instructions: Answer all questions to get your test result.
1) The age of an object in relation to the ages of other objects is
A
absolute age
B
relative age
C
relational age
D
comparative age
2) Carbon films are
A
carbonized impressions of plants or fish
B
carbonized isotope of organic material
C
carbonized trace fossils
D
carbonized bones of animals or fish
3) How many half-lifes would be necessary for a sample of parent isotopes to decay to the point that only 1/8 of the sample is composed of parent isotopes?
A
3
B
1
C
4
D
2
4) The most common Precambrian fossils are
A
marine worms
B
brachiopods
C
cyanobacteria
D
trilobites
5) The division of geologic time that makes up 88% of Earth's history is called
A
the Paleozoic Era
B
the Precambrian Time
C
the Permian Period
D
the Cambrian Period
6) Dinosaurs became extinct at the end of the
A
Triassic period
B
Paleocene Epoch
C
Cretaceous Period
D
Jurassic Period
7) Fossilized dung or waste is called
A
waste
B
gastrolite
C
index fossil
D
coprolite
8) The unit of geologic time into which a period is divided
A
epoch
B
eon
C
era
D
period
9) The fossilized remains of an organism found in very dry places are called
A
trace fossil
B
mummification
C
petrification
D
carbon films
10) The gradual development of new organism from preexisting organisms is called
A
natural selection
B
environmental change
C
evolution
D
mass extinction
11) The first period of the Mesozoic Era is called the
A
Triassic Period
B
Quaternary Period
C
Cretaceous Period
D
Jurassic Period
12) Younger layers of undisturbed sedimentary rock are above older layers according to
A
the principle of sedimentarianism
B
the law of superposition
C
the angular unconformity
D
the principle of uniformitarianism
13) Almost all fossils are discovered in
A
metamorphic rock
B
sedimentary rock
C
igneous rock
D
volcanic rock
14) Organisms that formed index fossils
A
were destroyed by igneous rock
B
lived during short spans of geologic time
C
were destroyed by sedimentary rock
D
lived during long spans of geologic time
15) The Precambrian rock record is difficult to interpret because
A
Precambrian rock contains many fossils
B
very few rocks exist from the Precambrian time
C
Precambrian rock contains many minerals
D
tectonic activity has altered the original order of rock layers
16) Scientists have most accurately determined the absolute ages of rock layers by
A
using geologic columns
B
determining rates of erosion
C
factoring rates of sediment deposition
D
using radiometric dating methods
17) The numeric age of an object is called
A
comparative age
B
relational age
C
relative age
D
absolute age
18) The Pliocene Epoch began about 5.3 MYA, or
A
5.3 million years ago
B
5.3 billion years ago
C
5.3 thousand years ago
D
5.3 years after Earth formed
19) The end of the Permian and Cretaceous Periods were marked by
A
mass extinction
B
domination of dinosaurs
C
many new life-forms
D
the extinction of reptiles
20) A table that outlines the development of Earth
A
eon
B
geologic column
C
period
D
geologic time scale
*select an answer for all questions
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