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HSU Intro to Astronomy exam 1 study guide questions & answers 2024/2025
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HSU Intro to Astronomy exam 1 study guide questions & answers 2024/2025 A planet at inferior conjunction is always - ANSWERScloser to us than the sun is one second of arc is - ANSWERS1/3600 of a degree an imaginary sphere around the Earth to which the stars and the planets are attached: ...

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  • November 18, 2024
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  • 2024/2025
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HSU Intro to Astronomy exam 1 study
guide questions & answers 2024/2025

A planet at inferior conjunction is always - ANSWERScloser to us than the sun is



one second of arc is - ANSWERS1/3600 of a degree



an imaginary sphere around the Earth to which the stars and the planets are attached: -
ANSWERScelestial sphere



the celestial equivalent of latitude: - ANSWERSdeclination



the twelve constellations that lie on an imaginary band on the celestial sphere that is eighteen degrees
wide and centered on the ecliptic: - ANSWERSzodiac



the imaginary circle passing through the North and South points on our horizon and through the zenith -
ANSWERScelestial meridian



the ecliptic is - ANSWERSthe imaginary path that the Sun follows on the celestial sphere



a moon that is full will appear at its highest point in the sky at what time of the night or day? -
ANSWERSmidnight



the celestial equivalent of longitude is: - ANSWERSright ascension



if the moon is between the sun and the earth and almost in line with the sun, we call its phase: -
ANSWERSnew moon



one minute of arc is - ANSWERS1/60 of a degree

,an inferior planet will be furthest from Earth when it is at - ANSWERSsuperior conjunction



a slow shift in the orientation of the Earth's axis with respect to the rest of the universe is called -
ANSWERSprecession



the time of the year when the length of the day is equal to the length of the night are called the -
ANSWERSequinoxes



the Big Dipper is an _________ contained in the constellation Ursa Major - ANSWERSasterism



one hour of right ascension is equivalent to _______ degrees of sky rotation - ANSWERS15



______ is a system for naming stars by using a constellation and a Greek Letter - ANSWERSBayer System



in a penumbral lunar eclipse, - ANSWERSall parts of the Moon are partly (not totally) shaded from the
sun



when Saturn is at its farthest distance from the Earth, it is at - ANSWERSconjunction



leap years, containing an extra day, are necessary because - ANSWERSthe length of a year is not an exact
number of days



the equinoxes are located at the intersections of - ANSWERSthe ecliptic and the celestial equator



a circle can be divided equally into _____ degrees - ANSWERS360



which of the following is the correct sequence of appearances of moon phases in the sky? -
ANSWERSwaxing crescent, first quarter, waxing gibbous, full moon

, what is the primary reason for seasons? - ANSWERSthe 23.5 degree tilt of the Earth's rotation axis with
respect to the plane of the ecliptic



for us in the Northern hemisphere, winter days are generally cold because - ANSWERSthe North Pole is
pointing away from the sun



one synodic month is longer than one sidereal month by about - ANSWERS2.2 days



the person who introduced the leap year into our calendar was - ANSWERSJulius Caesar



which of the following planetary configurations or positions is impossible for a superior planet? -
ANSWERSinferior conjunction



when Mars is at opposition, it is - ANSWERShigh in the sky at midnight



a __________ eclipse occurs when the moon casts its shadow on the Earth - ANSWERSsolar



what phase is the moon when it is on the opposite side of the earth from the sun? - ANSWERSfull



the shortest day of the year occurs at the - ANSWERSwinter solstice



Venus can occasionally pass in front of the Sun as seen from the Earth. It can do so only when it is at -
ANSWERSinferior conjunction



Diurnal motion of objects in the sky is caused by - ANSWERSrotation of the Earth on its axis



in modern astronomy, the constellations are - ANSWERS88 sky regions covering the whole sky



astronomy - ANSWERShas produced many discoveries which have led to important results, including the
development of Newtonian mechanics upon which much of modern technology is based.

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