Astronomy Ch. 1 – Flashcards
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The Full Moon rises at sunrise, and sets at sunset.
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False
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From Earth, the Sun and Moon have about the same angular diameter.
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True
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The parallax shift of a star would be greater if viewed from Mars than from Earth.
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True
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Where on Earth can you observe all the stars in the sky over an entire year?
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Equator
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Driving eastward just before sunrise, if you observe the moon in the eastern sky, its phase must be
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Waning Crescent
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From the South Pole, Polaris would appear directly overhead.
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False
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If Taurus is now rising at sunset, which constellation will rise at sunset next month?
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Gemini
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If new Moon fell on March 2nd, what is the Moon's phase on March 14th?
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Waxing Gibbous
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The distances to bodies in the solar system are a few light minutes to light hours.
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True
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Into how many constellations is the celestial sphere divided?
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88
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Which of the choices below correctly lists things in order from largest to smallest?
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Universe, Local Group, Milky Way, Solar System
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There are 3,600 arc seconds in a degree.
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True
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The south celestial pole is located at a declination of -90 degrees.
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True
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If you are in the Moon's umbral shadow, then you will witness
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a total solar eclipse
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A solar eclipse can only happen during a:
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New Moon
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What conditions are necessary for a partial solar eclipse?
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new moon on ecliptic, with us in the penumbral shadow
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Only at the equator are all the stars visible over the course of the year.
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True
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From full moon to third quarter moon takes about a week.
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True
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Latitude and right ascension are coordinate systems used to find objects on the Celestial Sphere.
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False
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A lunar eclipse can only happen during a:
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Full Moon
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A star with a large parallax
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is a short distance to the earth.
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In general, the brightest star in a given constellation is designated as alpha.
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True
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At apogee the moon is at its farthest from earth and thus appears smaller than normal. Because of this it can produce only annular solar eclipses, but not total solar eclipses.
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True
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The star Wolf 1061 has a parallax of 2.34 arcseconds, while the star Ross 652 has a parallax of 1.70 arcseconds. What can you correctly conclude?
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. Wolf 1061 is closer to Earth than Ross 652.
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Over the course of a night, Polaris moves less than any other visible star in the sky.
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True
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Constellations are close clusters of stars, all at about the same distance from the Sun
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False
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In general, what is true of the alpha star in a constellation?
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It is the brightest star in the constellation.
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A year is defined as
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the time it takes for Earth to complete an orbit around the Sun.
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As it orbits the Earth, the Moon appears to move eastward about its own diameter every hour.
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True
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The first quarter moon will rise about noon, and set about midnight.
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True
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The places where the Sun crosses the equator are called the:
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equinoxes
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What conditions are necessary for a total solar eclipse?
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new moon on ecliptic near perigee
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It was Aristotle who used the scientific method to show the Earth was a sphere.
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True
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How long is the precession cycle?
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26,000 years
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What are constellations?
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Groups of stars making an apparent pattern in the celestial sphere
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When the sun rises it is located in the constellation Gemini. When the sun sets later that same day it will be
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Gemini
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If a star rises about 9 PM tonight, and with the sidereal day being four minutes less than the solar one, then in a month it will rise about 7 PM.
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True
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Which statement about the length of a day is FALSE?
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The sidereal day includes both the Earth's rotation and revolution around the Sun
