EBK PHYSICAL GEOGRAPHY LABORATORY MANUA
12th Edition
ISBN: 9780134599960
Author: Hess
Publisher: VST
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Chapter 5, Problem 1LC
To determine
To explain: The reason for the decrease in the atmospheric pressure with an altitude.
Expert Solution & Answer
Answer to Problem 1LC
The atmospheric pressure usually decreases as the altitude increases because of the compressible nature of Earth’s atmosphere, and the weaker influence of Earth’s gravity at the higher altitudes.
Explanation of Solution
The atmospheric pressure can be defined as the force exerted by the mass of gas molecules on a unit area of Earth's surface as well as on any other body on Earth.
The atmosphere is composed of gases that contain mass. As atmosphere has a weight, this mass is being pulled towards Earth by gravitational force.
The atmospheric pressure is omnidirectional, means it exerts the force equally in all directions (above, below, sides, and diagonally).
The atmospheric pressure is about 14.7 pounds per square inch at the sea level. Atmospheric pressure decreases with an increasing altitude because the actual number of gas molecules is also reduced. As we move farther away from Earth and its gravitational pull, the number of gas molecules present in the atmosphere will be lesser.
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Exercise Ten / Geologic Time
177
d. Based on the ages of the rock layers in outcrop 1, identify an unconformity. Remember that an unconformity is
a break in the rock record. Draw a wavy line on the figure to represent the unconformity.
Ginkgo
Period
Ginkgo
Lepidodendron
Dimetrodon
Period
Tyrannosaurus
Calamites
Inoceramus
Period
Lepidodendron
Rhodocrinites
Archimedes
Eurypterus
Period
Sharks
Period
Phacops
Agnostus
Outcrop 1
Period
Period
Ichthyosaurus
Period
Sharks
Ceratites
Period
Paleolimulus
A Figure 10.17 Sequences of sedimentary rock layers to accompany Question 7.
10.8 Numerical Dating with Radioactivity
■ Explain the principle of radiometric dating, including half-life, parent isotope,
and daughter product.
Radioactivity has provided a reliable means for calculating the numerical (absolute) age of
rocks, a procedure called radiometric dating. Radioactive isotopes, such as uranium-238,
emit particles from their nuclei that we call radiation. Ultimately, the process of decay…
Chapter 5 Solutions
EBK PHYSICAL GEOGRAPHY LABORATORY MANUA
Ch. 5 - Prob. 1LCCh. 5 - Prob. 2LCCh. 5 - Prob. 3LCCh. 5 - Prob. 4LCCh. 5 - Prob. 5LCCh. 5 - Prob. 6LCCh. 5 - Prob. 7LCCh. 5 - Prob. 8LCCh. 5 - Prob. 9LCCh. 5 - Prob. 10LC
Ch. 5 - Prob. 11LCCh. 5 - Prob. 12LCCh. 5 - Prob. 13LCCh. 5 - Prob. 14LCCh. 5 - Prob. 15LCCh. 5 - Prob. 1KTCCh. 5 - Prob. 2KTCCh. 5 - Prob. 3KTCCh. 5 - Prob. 4KTCCh. 5 - Prob. 5KTCCh. 5 - Prob. 6KTCCh. 5 - Prob. 7KTCCh. 5 - Prob. 8KTCCh. 5 - Prob. 9KTCCh. 5 - Prob. 10KTCCh. 5 - Prob. 11KTCCh. 5 - Prob. 12KTCCh. 5 - Prob. 13KTCCh. 5 - Prob. 14KTCCh. 5 - Prob. 15KTCCh. 5 - Prob. 16KTCCh. 5 - Prob. 17KTCCh. 5 - Prob. 18KTCCh. 5 - Prob. 19KTCCh. 5 - Prob. 20KTCCh. 5 - Prob. 21KTCCh. 5 - Prob. 22KTCCh. 5 - Prob. 23KTCCh. 5 - Prob. 24KTCCh. 5 - Prob. 25KTCCh. 5 - Prob. 26KTCCh. 5 - Prob. 27KTCCh. 5 - Prob. 28KTCCh. 5 - Prob. 29KTCCh. 5 - Prob. 30KTCCh. 5 - Prob. 31KTCCh. 5 - Prob. 32KTCCh. 5 - Prob. 33KTCCh. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 1SQCh. 5 - Prob. 2SQCh. 5 - Prob. 3SQCh. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - Prob. 6SQCh. 5 - Prob. 7SQCh. 5 - Prob. 8SQCh. 5 - Prob. 1ECh. 5 - Prob. 2ECh. 5 - Prob. 3ECh. 5 - Prob. 4ECh. 5 - Prob. 5E
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