Chapter 21 & 22 - assignment _su2019 (1)
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Faulkner University *
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1305_52_10
Subject
Geology
Date
Dec 6, 2023
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docx
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Uploaded by DrLlamaPerson381
Michelle Davis
Chapter 21 and 22
As usual, all of the matching and multiple choice questions should be reviewed – these will be helpful for the test
and general learning the information presented.
The following questions are assigned to be answered for this course.
20 points
Both correctness and completeness will be used in the evaluation of your submission.
Questions 1-6 are relate to concepts in
Chapter 21
Questions 7-13 are relate to concepts in
Chapter 22
1.
Name the major regions of the Earth from “outermost” to “innermost”.
(2pts)
The major regions of the Earth are crust, mantle, outercore, and innercore.
2.
What is meant by the term
Pangaea?
(1pts)
Pangaea is the supercontinent that is believed to have existed over 200 million years ago.
3.
Briefly state three types of evidence that support the concept of
continental drift.
(2pts)
Biological evidence is found when biological species and fossils are found on distant continents
that are separated today. Continuity of geologic features all continents perfectly together. Glacial
evidence is where there is solid geologic evidence confirms that a glacial ice sheet covered the
southern parts of South America, Africa, India, and Australia.
4.
Briefly, how are
volcanoes
explained in the theory of plate tectonics?
(2pts)
The theory of plate tectonics explains not only the existence of the Ring of Fire but also the
locations of volcanoes the world over. It is mainly along convergent plate boundaries that energy
is released in the form of volcanoes and earthquakes.
5.
Briefly, how are
earthquakes
explained in the theory of plate tectonics?
(2pts)
Earthquakes can be caused by explosive volcanic eruptions or even explosions detonated by
humans, but the great majority are associated with the movement of lithosphere plates.
6.
To which of the three principal types of mountains does each of the
following belong?
(2pts)
a.
The Grand Tetons
The Grand Tetons are volcanic mountains.
b.
The Appalachians
The Appalchians are fold mountains.
c.
The Cascades
The Cascades are fault-block mountains.
d.
The Himalayas
The Himalayas are fold mountains.
7.
Name six physical characteristics that are used to identify minerals
(3pts)
Six physical characteristics that are used to identify minerals are Hardness, Crystal Form,
Fracture, Color, Streak, Luster and Specific Gravity.
8.
Define the term
rock
.
What is the study of rocks called?
(1pts)
Rock is a solid, conesive natural aggregate of one or more minerals. People who study rocks are
called Geologists.
9.
Distinguish between magma and lava
(1pts)
Magma is the molten material beneath the Earth’s surface, but is called lava if it flows on the
surface.
10.
Distinguish between discordant and concordant igneous rocks
(2pts)
Discordant is when it cuts across the grain of the surrounding rock. Concordant is when it is
parallel to the grain of the surrounding rock.
11.
Why are sedimentary rocks the most important rocks for humans?
(1pts)
Sedimentary rocks are the most important rocks for humans is because it contains our energy
source and our groundwater.
12.
Distinguish between detrital and chemical sedimentary rocks.
(1pts)
Detrital sediments are composed of solid fragments or detritus derived from preexisting rock.
Chemical sediments are composed of minerals that were transported to the sea in solution.
13.
How do temperature and pressure change with increasing depth into the
Earth?
What kind of rock is produced at great depths?
Temperature and pressure both increase with the depth that is into the
Earth. Metamorphic is the rock that is produced at great depths.
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