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8th Grade -unit 4 Test
Test Description: Geological time scale
Instructions: Answer all questions to get your test result.
1) Principal of uniformitarianism?
A
an asteroid impact
B
steady erosion
C
a mass extinction
D
a large earthquake
2) Event that could cause immediate changes in Earth’s global climate?
A
asteroid impact
B
fossil formation
C
continental drift
D
mass extinction
3) Which of the following are two kinds of trace fossils?
A
petrified and mummified fossils
B
bee and beetle in amber
C
tracks and burrows
D
shells and bones
4) Which of the following arrangements would show the concept of relative dating?
A
forming a line in the order of birth month
B
forming a line in the order of height
C
forming a line in the order of age
D
forming a line in the order of weight
5) Law of crosscutting relationships explain the age of a fault caused by an earthquake?
A
The fault is older than the rocks above it.
B
The fault is younger than the rocks it cuts through.
C
The fault is younger than the rocks above it.
D
The fault is older than the rocks it cuts through.
6) Which of the following phrases represents the age of the rock in years?
A
age of the index fossil in the rock
B
absolute age of the rock
C
radiocarbon age of the rock
D
half-life of the rock
7) Which statement explains why she can more easily date the granite sample?
A
The granite is younger.
B
The granite is igneous.
C
The granite is older.
D
The granite is sedimentary.
8) What is the approximate age of Earth?
A
46,000 years
B
4.6 billion years
C
4.6 million years
D
4,600 years
9) First organism that released oxygen into Earth’s atmosphere, changing its composition?
A
trees
B
lichen
C
cyanobacteria
D
foraminifera
10) When did Earth's atmosphere change due to living organisms?
A
Precambrian time
B
Cenozoic Era
C
Paleozoic Era
D
Mesozoic Era
11) Which of the following changes to Earth's surface most likely happened as a result?
A
sea level decreased
B
sea level increased
C
rates of erosion increased
D
rates of erosion decreased
12) Which of these statements describes a key characteristic of index fossils?
A
They existed in a unique location.
B
They are present in very small numbers.
C
They existed for a short span of time.
D
They are similar to other fossils.
*select an answer for all questions
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