Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 2, Problem 22E
Describe a practical way to determine in which constellation the Sun is found at any time of the year.
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Students have asked these similar questions
For an entire year, you carefully plot and track the sun's position relative to the background stars (i.e., the celestial sphere). Which of the following is an accurate description of what you observe for the sun's annual drift relative to the celestial sphere?
Select one:
a.
the sun appears to shift only north or south, with no apparent drift east or west
b.
each day, the sun appears to drift primarily from east to west
c.
each day, the sun appears to drift primarily from west to east
d.
the sun does not appear to drift at all relative to the background stars, as defined by our 24 hour day
Description: If you could see both the Sun and the other stars during the day, this is what the sky would
look like looking south at noon on January 1 for an observer in the northern hemisphere. The Sun would
appear in the sky next to the more distant stars in the constellation Sagittarius, (labeled constellation C).
Also shown are other constellations (named and labeled A, B, D, and E) that will be visible above the
horizon at this time when facing south.
Aquarius
-EAST
B
Capricornus
Horizon
Sagittarius
SOUTH
SUN
D
Scorpius
Libra
E
WEST->>
6.
A star is observed to cross the meridian (due south) at an elevation of
34°, as seen from an observatory sited at a latitude of 42° north. What is
the declination of the star? At the moment of transit, a clock running on
Universal Time (UT) read 03 h 16min 24 s. At the previous midnight, the
sidereal time was 14h 38 min 54 s. Calculate the Right Ascension of the
star.
Chapter 2 Solutions
Astronomy
Ch. 2 - From where on Earth could you observe all of the...Ch. 2 - Give four ways to demonstrate that Earth is...Ch. 2 - Explain, according to both geocentric and...Ch. 2 - In what ways did the work of Copernicus and...Ch. 2 - What were four of Galileo’s discoveries that were...Ch. 2 - Explain the origin of the magnitude designation...Ch. 2 - Ursa Minor contains the pole star, Polaris, and...Ch. 2 - How many degrees does the Sun move per day...Ch. 2 - How many degrees does the Moon move per day...Ch. 2 - Explain how the zodiacal constellations are...
Ch. 2 - The Sun was once thought to be a planet. Explain...Ch. 2 - Is the ecliptic the same thing as the celestial...Ch. 2 - What is an asterism? Can you name an example?Ch. 2 - Why did Pythagoras believe that Earth should be...Ch. 2 - How did Aristotle deduce that the Sun is farther...Ch. 2 - What are two ways in which Aristotle deduced that...Ch. 2 - How did Hipparchus discover the wobble of Earth’s...Ch. 2 - Why did Ptolemy have to introduce multiple circles...Ch. 2 - Why did Copernicus want to develop a completely...Ch. 2 - What two factors made it difficult, at first, for...Ch. 2 - What phases would Venus show if the geocentric...Ch. 2 - Describe a practical way to determine in which...Ch. 2 - What is a constellation as astronomers define it...Ch. 2 - Draw a picture that explains why Venus goes...Ch. 2 - Show with a simple diagram how the lower parts of...Ch. 2 - Parallaxes of stars were not observed by ancient...Ch. 2 - Why do you think so many people still believe in...Ch. 2 - Consider three cosmological perspectives-the...Ch. 2 - The north celestial pole appears at an altitude...Ch. 2 - What were two arguments or lines of evidence in...Ch. 2 - Although the Copernican system was largely correct...Ch. 2 - During a retrograde loop of Mars, would you expect...Ch. 2 - The Great Pyramid of Giza was constructed nearly...Ch. 2 - Explain why more stars are circumpolar for...Ch. 2 - What is the altitude of the north celestial pole...Ch. 2 - If you were to drive to some city south of your...Ch. 2 - Hipparchus could have warned us that the dates...Ch. 2 - Explain three lines of evidence that argue against...Ch. 2 - What did Galileo discover about the planet Jupiter...Ch. 2 - What did Galileo discover about Venus that cast...Ch. 2 - Suppose Eratosthenes had found that, in...Ch. 2 - Suppose Eratosthenes’ results for Earth’s...Ch. 2 - Suppose you are on a strange planet and observe,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Explain how the zodiacal constellations are different from the other constellations.arrow_forwardIs the ecliptic the same thing as the celestial equator? Explain.arrow_forwardUsing stars from one or more of the “official” constellations, create an asterism that is significant to the culture of your school.arrow_forward
- On the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.arrow_forwardWhich is the asterism and which is the constellation: Orion and Orions belt? Name another asterism/constellation combination.arrow_forwardWhat is the reading? What does this mean?arrow_forward
- This subject is astronomy-the solar system. How could you use the night sky (constellations) to find north at night? Is this "north" the same as geographic north? Why/why not?arrow_forwardUse the figure below to answer the following question. In this Earth-Sun system drawing we have indicated the direction of both the daily rotation of Earth about its own axis and its annual orbit about the Sun. Imagine you are the observer shown on Earth in the northern hemisphere. Three months prior to the time shown, what constellation is highest in the sky at noon? To North Star Pisces Aquarius Capricornus Aries 1 day Sagittarius Scorpius Taurus 365 days Libra Gemini Virgo Cancer Leo A. Scorpius B. Aquarius O C. Virgo O D. Leo E. Cancerarrow_forwardThe two figures provided below show the motion of Stars A and B in the sky. Note that Star A is first visible above the horizon at noon. In what direction is Star B moving at 3:00 am? Celestial Sphere Rotation Path of Celestial Star B 1 Sphere Path of North Star North Star Star A 9 PM 3. North Earth's' Horizon Equator Celestial Sphere Rotation O A. west (to the left) B. east (to the right) O C. south (out of the page) OD. away from the horizon (up) E. toward the horizon (down)arrow_forward
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