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Chapter 12
Concept 1 Quiz
Concept 1 Quiz
Understand the complex history of the geologic past by using the Geologic Time Scale. List significant geologic, biologic, and special events for each Era, including the largest span of geologic time during the Precambrian.
This activity contains 11 questions.
Large "core areas" of Precambrian rocks, called ____________, exist on each continent.
roots
plateaus
rifts
complexes
shields
Substantial quantities of oxygen accumulated in Earth's oceans and atmosphere after the available metallic ____________ was oxidized.
copper
lead
nickel
magnesium
iron
Geologists infer and hypothesize that Earth's original atmosphere included many gases. Which of the following gases was
not
included?
nitrogen
oxygen
carbon dioxide
water vapor
all of the above
Which one of the following is most notably absent in Precambrian rocks?
metamorphic rocks
fossil fuels
igneous rocks
iron-rich (oxidized) deposits
silicate minerals
The first life-forms on Earth, probably bacteria, did not need oxygen.
True
False
The first three eons of Earth's history are collectively known as the Precambrian.
True
False
Considering the Precambrian represents a large expanse of time, little is known about these rocks because
they have been extensively eroded
they have been metamorphosed and deformed
they contain few if any fossils
they are not always exposed
all of the above
Precambrian fossils found as distinctly layered mounds or columns of calcium carbonate are known as
metallic ore deposits
gastroliths
epochs
stromatolites
stalagmites
Which of the following contributed to oceans on the surface of Earth?
atmosphere and torrential rain
cool surface (below 100 degrees Celsius)
free atmospheric oxygen
a and b
all of the above
We know very little about Precambrian rocks because they were all destroyed through mining activities.
True
False
Complete this chart by choosing the best answer to mark the times of appearance and abundance of major groups of organisms.
(Picture from
Earth Science
, 11th edition Prentice-Hall, Inc.)
This question presents 3 items numbered 11.1 through 11.3. Each item is presented with a pulldown menu containing the letters A through C.
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
11.1 Amphibians
A
B
C
11.2 Flowering Plants
A
B
C
11.3 Reptiles
A
B
C
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