Unit 5 Quiz_ Introduction to Geology - GEL101_5000
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Eastern Gateway Community College *
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Course
101
Subject
Geology
Date
Dec 6, 2023
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7
Uploaded by DrFoxPerson214
7/4/23, 8:21 AM
Unit 5 Quiz: Introduction to Geology - GEL101_5000
https://egcc.instructure.com/courses/37801/quizzes/230321
1/7
Unit 5 Quiz Due
Jul 9 at 10:59pm
Points
29
Questions
29
Available
after Jun 4 at 11pm
Time Limit
35 Minutes
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
28 minutes
28 out of 29
Correct answers are hidden.
Score for this quiz: 28
out of 29
Submitted Jul 4 at 8:20am
This attempt took 28 minutes.
Unit 5 Quiz will include material from "Layered Earth" (A2-1, A2-3), (B3-1 - B3-6), (D1-1), and G1-1 - G1-11) review questions, and from the unit's associated chapter(s) in the
textbook.
The quiz is open book, however, there will be a time limit, so review and be prepared for your quiz. 1 / 1 pts
Question 1
All of the following represents the definition and composition of the layers of the Earth, except?
The crust is the rigid solid layer that makes up the surface of the Earth The core is divided into two distinct zones, the inner core and is solid The mantle is a dense, how layer of flexible rock that makes up the most center part of the Earth The core is the center of the Earth, and is primarily made up of iron 1 / 1 pts
Question 2
Which layer of the Earth is responsible for the Earth's magnetism?
upper mantle lower mantle inner core outer core crust 1 / 1 pts
Question 3
The intensity (strength) of Earth's magnetic field is the same across the globe.
True False
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Unit 5 Quiz: Introduction to Geology - GEL101_5000
https://egcc.instructure.com/courses/37801/quizzes/230321
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1 / 1 pts
Question 4
Which area of the globe has the weakest magnitism? equator regions mid-latitudes south pole north pole 1 / 1 pts
Question 5
The lithosphere consists of which layers?
the upper mantle and lower mantle the crust and upper mantle crust and the mantle the lower mantle and the outer core 1 / 1 pts
Question 6
Oceanic crust is the crust that underlies most of the world's oceans, it is fairly thin, is mainly composed of basalt, and is relativley
young when compared to other areas.
True False 1 / 1 pts
Question 7
Continental Crust underlies the continents, contains a high level of granite, is less dense than oceanic crust, and will always ride
over oceanic crust where the two meets.
True False 1 / 1 pts
Question 8
Which of the following elements makes up >87 percent of the Earth's crust?
oxygen, potassium, calcium, sodium
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Unit 5 Quiz: Introduction to Geology - GEL101_5000
https://egcc.instructure.com/courses/37801/quizzes/230321
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Iron, Aluminum, Silicon, Oxygen magnesium, potassium, Calcium, silicon Oxygen, Silicon, Aluminum, Lead 1 / 1 pts
Question 9
Scientists theorize that the Earth's internal heat comes from two main sources; residual heat and radioactive decay.
True False 1 / 1 pts
Question 10
The decay of potassium 40, uranium 238, and thorium 232 are responsible for heating the interior of the Earth through their slow
radioactive decay. True False 1 / 1 pts
Question 11
Which area in the U.S. has the highest level of Uranium in surface rocks. South-West South-East Mid-North 0 / 1 pts
Question 12
Incorrect
Incorrect
The small amounts of Uranium f ound embedded in surface rocks and soils do not pose an elevated risk to humans.
True False 1 / 1 pts
Question 13
The theory of plate tectonics is based on the rigid plates that are constantly in motion. These plates are composed of oceanic and
or continental crust, and the rigid upper part of the mantle, which together make up the lithosphere and these plates ride over the
asthenosphere, a layer of flowing rock. True
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7/4/23, 8:21 AM
Unit 5 Quiz: Introduction to Geology - GEL101_5000
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False 1 / 1 pts
Question 14
All of the following plates have been identified among the 7 large plates, except;
North American Plate African Plate Caribbean Plate Pacific Plate Eurasian Plate South American Plate 1 / 1 pts
Question 15
The original supercontinent was named Pangaea.
True False 1 / 1 pts
Question 16
Paleomagnetism is the study of Earth's historical magnetic properties.
True False 1 / 1 pts
Question 17
Magnetic striping is a result of seafloor spreading on both sides of the mid-oceanic ridge.
True False 1 / 1 pts
Question 18
Magnetic reversals occur due to the physical property of magnetic materials known as the Curie temperature (TC). Magnetic
materials lose their magnetism when their temperature exceeds the Curie temperature. True
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Unit 5 Quiz: Introduction to Geology - GEL101_5000
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False 1 / 1 pts
Question 19
As magnetic materials cool to a temperature below their Curie temperature, magnetic grains in the material will align themselves
with the magnetic poles. As the magnetic material solidify, a record of the orientation of the magnetic poles is frozen in their
orientation structures, providing a record of the Earth's magnetic pole reversals. True False 1 / 1 pts
Question 20
Internal processes generally:
lower the elevation of the land surface elevated landforms, mountains, volcanoes create land forms like lakes, caves, and kettle lakes 1 / 1 pts
Question 21
The Earth is currently estimated to be approximately 2.6 billion years old.
True False 1 / 1 pts
Question 22
Uniformitarianism concepts underlie the basic theory of many sciences, and states that processes that we see today occurring on
Earth were also occurring during Earth's historical past. True False 1 / 1 pts
Question 23
The Principle of Original Horizontality and the Principle of Superposition state that the layers of rock when flat are undistrubed,
when layers are bent, then the process occured after the orginal sedimenatyr rock wes formed and deposited, therefore
information can be related to the way in which the layers were deposited and that the age of the rock will be older on the bottom
and younger on the top. True
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Unit 5 Quiz: Introduction to Geology - GEL101_5000
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False 1 / 1 pts
Question 24
The Great Unconformity represents a time gap in the geologic record where a long period of time elapsed where no deposition
occurred, top layers during this time were eroded away, then deposition was resumed. True False 1 / 1 pts
Question 25
An inclusion refers to a piece of one type of rock that is contained within another rock type.
True False 1 / 1 pts
Question 26
Correlation can be made between rock layers in different areas, they can be matched up due to similarity in the rock layers. True False 1 / 1 pts
Question 27
Absolute Age: refers to the actual age in years of an object, whereas, radioactive decay is a measure of unstable atoms of an
element as they break down over a set time period. True False 1 / 1 pts
Question 28
A half-life is the measure of the time it takes for the entire sample to decay into another element.
True False 1 / 1 pts
Question 29
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Unit 5 Quiz: Introduction to Geology - GEL101_5000
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Fossils are important to the study of Geology because they provide a look into Earth's historical past by providing information on
past environmental conditions, types of animals and plants that existed, and fossils found in differnt areas can help determine the
age of rocks. Index fossils are found solely in rock of a particular age, so when undated rock layers are being studied, index
fossils can help date the rock. True False Quiz Score: 28
out of 29