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Geologic Time and Evolution
Test Review
Write the correct Era or division of time on the line.
1.
Division that makes up about 90% of Earth’s
Precambrian
history to date.
2.
Precambrian
During this major division of time,
cyanobacteria were the most abundant form of life.
3.
Mesozoic
periods.
4.
Paleozoic
Era that began 545 million years ago. Life forms included
trilobites, the first fish, amphibians, land plants, and reptiles.
5.
Cenozoic
Geologic division of time when life forms included the first
horse, elephants, and the appearance of the modern humans.
6.
Mesozoic
mammals, and flowering plants.
Era divided into the Triassic, Jurassic and Cretaceous
In this era, life forms included the first dinosaurs, birds,
7.
Cenozic
Subdivisions are the Tertiary and Quaternary Periods.
8.
Cenozoic
The era in which we live.
9.
Paleozoic
The Era that had an abundance of marine life.
10.
Mesozoic
The movie Jurassic Park is based on which era?
11.
Cenozoic
This is the only era broken into epochs.
12.
Paleozoic
What era was broken into six or seven periods?
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13.
Mesozoic
When did Pangaea begin to break apart?
14.
Mesozoic
Which era began about 225 million years ago?
15. Precambrian
Which geologic division is not broken into periods?
16.Describe what is happening in figures 1-3 to the below. Is the population of mice
different in figure 3 than in figure 1? Explain why.
17.. Natural Selection
as
The fact that the white mice were less likely to survive is known
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Write the correct word on the line.
18. Water
The process of fossil formation by replacement of minerals depends on
the original material first being dissolved by
19. Fossil
20. 4.6 Billion Years old
Remains or traces of a once living organism.
According to geological evidence, the earth is:
21. Period
and geologic events.
Geologic subdivision of an era based on the era’s life forms
22.
Eras
Paleozoic, Mesozoic and Cenozoic are
23.
Mass Extinction
The end of the Paleozoic and Mesozoic Eras are marked by
24. Principle of Superposition
States that, in layers of rock, the oldest layers are at the
bottom and the youngest are at the top if left undisturbed.
25.
Oxygen
26. Charles Darwin
called Natural Selection.
What do scientists believe the cyanobacteria provided?
Naturalist who modernized the Theory of Evolution
27. Evolution
Over a long period of time, some species have become
extinct, while new species have descended from earlier species. These changes are known as:
28. Bacteria
time?
29. Fossils
Which organisms have existed on Earth for the longest period of
paleontologist is most likely to study
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variations
Within each species, there are thousands of
small differences (such as the ones above). The young of almost all species have small
differences among them. The differences are described as
31. Explain the principle of Superposition and how it is useful to Paleontologist.
32. List 4 ways organisms can be fossilized.