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Ch. 22 Summary P.597
Test Description: Geologic Time, Pre Cambrian Earth
Instructions: Answer all questions to get your test result.
1) What process did geologistsuse to determine that the Earth is 4.6 billion years old?
A
Miami Heat
B
radiometric dating
C
relative age dating
D
superposition
2) Scientists used rocks from the _______ to determine the age of the Earth.
A
Moon
B
Mars
C
Sun
D
outer space
3) What process helped form Earth's early atmosphere and the oceans?
A
oxygen
B
outgassing
C
Tupac
D
red bed
4) Which of the following are small and contain no nuclei?
A
Sponge Bob
B
prokaryotic cells
C
plants
D
tigers
5) The first evidence of multicellular animals comes from
A
oxygen
B
eukaryotic algae
C
outgassing
D
volcanoes
6) The oxygen contained in the atmosphere comes mainly from
A
photosynthesis
B
animal waste
C
recycled material
D
the ocean
7) What is the main difference between eukaryotic and prokaryotic cells?
A
prokaryotic cells contain nuclei
B
eukaryotic cells are smaller
C
eukaryotic cells contain nuclei
D
prokaryotic cells are larger
8) What era are we living in?
A
Mesozoic
B
Cenozoic
C
Quaternary
D
Paleozoic
9) At the end of what eon did the first continent form?
A
Proterozoic
B
Archean
C
Cambrian
D
Permian
10) Why was the earth so hot in its early days?
A
too many animals
B
the Sun was too close
C
abundance of radioactive isotopes
D
too much water
*select an answer for all questions
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