Global Navigation Homework Solutions Chapter 1 1 Learning Objectives Understand the fundamentals of how the earth and the four navigational planets orbit the sun and how the moon orbits the earth ID: 731389
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Slide1
A View of our Solar System
Global NavigationHomework SolutionsChapter 1
1Slide2
Learning Objectives
Understand the fundamentals of how the earth and the four navigational planets orbit the sun, and how the
moon orbits the earth
.
Understand how this activity results in the apparent motions of the stars, the planets, the moon and the sun as seen from earth.
Understand what is meant by the First Point of Aries
Understand sidereal hour angle (SHA) of a star, and how to determine the GHA of the star from its SHA.
Understand the difference between "solar" and "sidereal" time.Slide3
Practical Exercise
1. Follow the Student Manual for guidance.Slide4
Question - 2
The stars, planets, moon and sun appear to rise in the east and set in the west about 12 hours later. This is primarily due to:
a) the
earth's orbit around the sun.
b) the
effect of the ecliptic.
c) the
earth's rotation about its axis.
d)
Haley's
Cornet.
Ref
:
¶
18Slide5
Question 3
What are the four navigational planets? Venus, Mars, Jupiter, SaturnRef. ¶ 14
5Slide6
Question 4
The moon takes about 28 days to orbit the earth, and we always see the same face or side of the moon. How long does it take the moon to rotate on its axis?a. It does not
rotate
b. 24
hours
c.
28
days
d. 365
days
Ref
: 15
6Slide7
Question 5
Unlike the sun, moon and planets, the stars stay in essentially the same position relative to each other.a. True
b. False
Ref
. 18
7Slide8
Question 6
The first point of Aries is:a. The apparent position of the sun in the heavens at the vernal equinox.
b. only
important if you were
born
in March or April.
c. the
apparent position of the sun in the heavens at the autumnal equinox.
d. the
apparent position of the sun in the heavens at either the summer or
winter solstice.
Ref
25
8Slide9
Question 7
We can observe Aries with our sextant and determine an LOP from it.a. Trueb. False
Ref
. 25
9Slide10
Question 8
The sidereal hour angle, SHA, of any given star is essentially constant.a. Trueb. False
Ref
.
27
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A View of our Solar System
End of Chapter 1
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