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Cards In This Set
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A long, thin cloud that stretched from directly overhead to the western horizon would have an angular size of: 45, 90, 180,360
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90
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How, and by roughly how much, would the length of the solar day change if Earth's rotation were suddenly to reverse direction?: 8 min shorter, 8 min longer, 4 min shorter, 4 min longer, the same
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8 min shorter than the current solar day
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True or False: If a star rises about 9 PM tonight, and with the sidereal day being 4 min less than the solar one, then in a month it will rise about 7 PM
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True
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In what equinox or solstice does the following occur: the Sun rises due east today, but will rise slightly north of due east tomorrow
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Spring equinox
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In what equinox or solstice does the following occur: the noontime Sun reaches its highest point of the year
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Summer solstice
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In what equinox or solstice does the following occur: longest day (most daylight) of the year
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Summer solstice
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In what equinox or solstice does the following occur: the Sun has declination 0 degree today, but will have a negative declination tomorrow
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Fall equinox
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In what equinox or solstice does the following occur: the Sun crosses the meridian 23.5 degrees lower in altitude than the celestial equator
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Winter solstice
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In what equinox or solstice does the following occur: sunset occurs at its farthest point south of due west for the year
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Winter solstice
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In what equinox or solstice does the following occur: the noontime Sun casts the longest shadows
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Winter solstice
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The places where the Sun crosses the equator are called the: annalemmas, equinoxes, zeniths, prime meridians, solstices
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Equinoxes
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Which of the following describes parallax?: It is best measured over exactly one year intervals; was first observed by Galileo with his new telescope; it's more accurate as the distances to objects becomes greater; it's inversely proportional to the distance to the star; it's only applicable to objects within the solar system
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It's inversely proportional to the distance to the star
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If Earth orbited Sun in 9 months instaed of 12, then, compared with a sidereal day, a solar day would be: longer, shorter, unchanged
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Longer
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A calculation of how long it takes a planet to orbit the Sun would be most closely related to Kepler's: 1st law of orbital shapes; 3rd law of planetary distances; 2nd law of orbital speeds; 1st law of inertia
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3rd law of planetary distances
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Which equation do you use for Newton's 2nd law of motion?
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F=m x acceleration
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