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Earth History Test Review
Test Description: Test Review 2
Instructions: Answer all questions to get your test result.
1) What process caused the material that formed the Earth to gather long ago?
A
radioactive decay
B
gravitational contraction
C
solar wind
D
magma cooling
2) What did the mass extinction at the end of the Permian Period lead to?
A
abundant new life-forms in the Mesozoic and Cenozoic Era
B
fewer resources during the Mesozoic Era
C
little change in the Mesozoic Era
D
abundant new life-forms in the Paleozoic Era
3) According to the impact hypothesis, dinosaurs became extinct when
A
the continents moved apart
B
a giant meteorite crashed into Earth
C
volcanic activity increased
D
the sun got too close to the Earth
4) The repeated advance and retreat of ice sheets characterized which Epoch?
A
Cambrian
B
Pleistocene
C
Mississippian
D
Pennsylvanian
5) Where are the oldest rocks located on a geologic column.
A
the back
B
the middle
C
the top
D
the bottom
6) The formation of an oxygen atmosphere began during which Era?
A
Paleozoic Era
B
Cenozoic Era
C
Precambrian Era
D
Mesozoic Era
7) The age of an object in relation to the ages of other objects is known as its
A
relational age
B
relative age
C
absolute age
D
comparative age
8) Index fossils found in rock layers in different areas of the world indicate that the rock layers
A
formed during the same period of time.
B
formed during different periods of time.
C
never fully formed.
D
are still forming.
9) This isotope is used to date objects less than 70,000 years old.
A
Carbon-51
B
Radium-14
C
Nitrogen-14
D
Carbon-14
10) How is radioactive decay used to determine the absolute age of rocks?
A
Isotopes of different compounds are compared.
B
Radioactive decay cannot be used to determine the age of a rock.
C
Original radioactive material remaining in the sample is compared to non-radioactive material formed
*select an answer for all questions
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