PHYS 284 Final Chapter 2 questions with answers

PHYS 284 Final Chapter 2 questions with
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answers

1) How many stars can you see with your naked eye on a
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clear, moonless night from a dark location?
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A) fewer than a thousand
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B) a few thousand
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C) about ten thousand
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D) about a hundred thousand
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E) more than you could count in your lifetime - CORRECT
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ANSWERS ✔✔B) a few thousand |\ |\ |\ |\




2) Which of the following best describes the modern
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definition of a constellation? |\ |\ |\




A) a region of the celestial sphere
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B) a pattern of bright stars in the sky
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C) a Greek mythological figure
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D) a collection of stars that are near one another in space
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E) a group of stars that all lie at about the same distance
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from Earth - CORRECT ANSWERS ✔✔A) a region of the
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celestial sphere |\

,3) Which of the following statements about the celestial
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sphere is not true? |\ |\ |\




A) When we look in the sky, the stars all appear to be
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located on the celestial sphere.
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B) Earth is placed at the center of the celestial sphere.
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C) The celestial sphere does not exist physically.
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D) The "celestial sphere" is just another name for our
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universe.
E) From any location on Earth, we can see only half the
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celestial sphere at any one time. - CORRECT ANSWERS
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✔✔D) The "celestial sphere" is just another name for our
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universe.


4) Which of the following statements about the celestial
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equator is true at all latitudes? |\ |\ |\ |\ |\




A) It lies along the band of light we call the Milky Way.
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B) It represents an extension of Earth's equator onto the
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celestial sphere. |\




C) It cuts the dome of your sky exactly in half.
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D) It extends from your horizon due east, through your
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zenith, to your horizon due west.
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E) It extends from your horizon due north, through your
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zenith, to your horizon due south. - CORRECT ANSWERS
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✔✔B) It represents an extension of Earth's equator onto
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the celestial sphere.
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,5) What is the ecliptic?
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A) when the Moon passes in front of the Sun
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B) the Moon's apparent path along the celestial sphere
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C) the constellations commonly used in astrology to
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predict the future |\ |\




D) the Sun's daily path across the sky
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E) the Sun's apparent path along the celestial sphere -
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CORRECT ANSWERS ✔✔E) the Sun's apparent path along |\ |\ |\ |\ |\ |\ |\ |\



the celestial sphere
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6) When we look into the band of light in our sky that we
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call the Milky Way, can we see distant galaxies? Why or
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why not? |\




A) Yes, they appear as small, fuzzy patches on the other
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side of our galaxy.
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B) Yes, there are many other galaxies that we see inside
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the Milky Way.
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C) No, because the stars, gas, and dust of the Milky Way
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block us from seeing them.
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D) No, because there are only galaxies above and below
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the plane of the Milky Way.
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E) No, we cannot see any other galaxies from Earth. -
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CORRECT ANSWERS ✔✔C) No, because the stars, gas, |\ |\ |\ |\ |\ |\ |\ |\



and dust of the Milky Way block us from seeing them.
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, 7) Which of the following correctly describes the meridian
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in your sky?
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A) a half-circle extending from your horizon due east,
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through your zenith, to your horizon due west
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B) a half-circle extending from your horizon due north,
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through your zenith, to your horizon due south
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C) a half-circle extending from your horizon due east,
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through the north celestial pole, to your horizon due west
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D) the point directly over your head
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E) the boundary between the portion of the celestial
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sphere you can see at any moment and the portion that
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you cannot see - CORRECT ANSWERS ✔✔B) a half-circle
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extending from your horizon due north, through your
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zenith, to your horizon due south
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8) If it is midnight in New York, it is
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A) daytime in Sydney, Australia.
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B) midnight in Sydney, Australia.
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C) midnight in Los Angeles.
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D) midday in Rio de Janeiro, Brazil.
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E) midnight everywhere. - CORRECT ANSWERS ✔✔A)
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daytime in Sydney, Australia. |\ |\ |\