Prehistoric Timeline
Big Five mass extinction events
Assignment #13 Early
Earth and Extinction Practice Questions
Answer all
of the following questions to the best of your ability. Use your notes about
the early Earth and the links on the website as resources. Write in complete
sentences where appropriate.
1. Which of
the following puts the events below in proper chronological order?
A. The
formation of the Rocky Mountains
B. The
formation of the Appalachian Mountains
C. The
Pleistocene Ice Ages
D. The
Holocene Epoch
E. The
Precambrian Era
A. E, B, A,
C, D D.
C, E, A, B, D
B. A, E, B,
C, D E.
C, B, E, A, D
C. A, B, E,
D, C
2. The
Mesozoic Era was also known as the Age of
A. Mammals D.
Fishes
B. Reptiles E.
Invertebrates
C.
Amphibians
3. The
first atmosphere on Earth was most likely composed of
A. H2
and He D.
O2 and CO2
B. H2 and
O2 E.
NH3 and O2
C. He and O2
4. What
process causes gases such as CO2, SO2 Cl2, NH3,
and CH4 to form in Earth’s early atmosphere?
A.
Photosynthesis D.
Evapotranspiration
B. Animal
respiration E.
Chemical weathering
C. Volcanic
outgassing
5. Define extinction and provide an example.
6. The
largest mass extinction occurred during which period?
A.
Pleistocene D.
Permian
B.
Creatceous E.
Devonian
C. Triassic
7. Ten
thousand years ago, a mass extinction affected primarily
A. bacteria D.
rodents
B.
phytoplankton E.
invertebrates
C. large
mammals
8. The last
six hundred million years have seen _________ major extinctions.
A. 2 D.
5
B. 3 E.
6
C. 4
9. Which of
the following was the geologic era when the dinosaurs roamed Earth?
A. Jurassic D.
Mesozoic
B.
Paleozoic E.
Cretaceous
C. Cenozoic
10.
Describe the Cambrian explosion.
11. Explain
the Earth’s atmosphere changed from one that contained almost no oxygen to its
current state where it is over one-fifth oxygen.
12. What
possible benefits could mass extinctions have had for life on Earth?
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