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If intending to teach his students the constellations by season, why would an astronomyinstructor be advised to always assign the stars in the current western sky at the beginning ofeach term?

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As the Earth revolves around t...

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What is the ecliptic?

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The ecliptic is the ...

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While watching a star, you see it moves 15 degrees across the sky. How long have you beenwatching it?


A) 1 hour
B) 3 hours
C) 15 minutes
D) 15 seconds
E) 1 minute

F) C) and E)
G) B) and E)

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An effective theory must:


A) have been proven.
B) must have been around for centuries or longer.
C) be continuously tested.
D) include mathematical formulae.

E) A) and D)
F) B) and C)

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The star Wolf 1061 has a parallax of 2.34 arcseconds, while the star Ross 652 has a parallaxof 1.70 arcseconds. What can you correctly conclude?


A) Both stars are outside the Milky Way Galaxy.
B) Wolf 1061 must have a larger proper motion than Ross 652.
C) Ross 652 must have a larger proper motion than Wolf 1061.
D) Ross 652 is closer to Earth than Wolf 1061.
E) Wolf 1061 is closer to Earth than Ross 652.

F) A) and B)
G) C) and D)

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If Sirius transits my local meridian tonight at 6:43 PM, when will it transit tomorrow?

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At 6:39 PM tomorrow ...

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The distances to other stars is best measured in ________.

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What are constellations?


A) groups of galaxies gravitationally bound and close together in the sky
B) groups of stars making an apparent pattern in the celestial sphere
C) groups of stars gravitationally bound and appearing close together in the sky
D) ancient story boards, useless to modern astronomers
E) apparent groupings of stars and planets visible on a given evening

F) A) and C)
G) B) and E)

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It was Aristotle who used the scientific method to show the Earth was a sphere.

A) True
B) False

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What celestial line is a product of the Earth's orbit around the Sun?


A) Ecliptic
B) Prime Meridian
C) Equator
D) Galactic Plane
E) Analemma

F) C) and E)
G) A) and B)

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A solar eclipse can only happen during a:


A) new Moon.
B) solstice.
C) first quarter Moon.
D) full Moon.
E) perihelion passage of the Sun.

F) A) and B)
G) A) and C)

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A(n)________ is a framework of ideas and assumption used to explain some set ofobservations and make predictions about the real world.

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Astronomical objects are viewed against the background of the ________.

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From Earth, the Sun and Moon have about the same angular diameter.

A) True
B) False

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Why are summers hotter than winters? Relate this to the Sun's position in the celestial sphereand the length of the days.

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The Sun is 47 degrees higher i...

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What conditions are necessary for a partial solar eclipse?


A) new Moon on ecliptic, with us in the penumbral shadow
B) full Moon on equator, with us in the umbral shadow
C) new Moon at perigee
D) full Moon at apogee
E) first or third quarter Moon at a node

F) A) and C)
G) C) and D)

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The Sun's lowest position in the sky occurs at the ________.

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The new Moon happens about once a month, and is often described as happening when theMoon passes between the Sun and the Earth. Why isn't there an eclipse during every new Moon?


A) The apparent size of the Moon is only occasionally large enough to block the Sun.
B) The Moon is not actually directly between the Earth and the Sun during the new Moonbecause its orbit is tilted relative to the ecliptic plane.
C) The Moon is not actually directly between the Earth and the Sun during the new Moonbecause its orbit is tilted relative to the celestial equator.
D) The Moon can only block the Sun when it is furthest away from Earth, and most new Moonshappen when the Moon is at another place on its orbit.

E) All of the above
F) A) and B)

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From full Moon to third quarter Moon takes about a week.

A) True
B) False

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The place the Sun stops its northward motion along the ecliptic is the:


A) equator.
B) prime meridian.
C) summer solstice.
D) vernal equinox.
E) node of the ecliptic.

F) All of the above
G) B) and E)

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