AST1002 EXAM 1 TEST BANK FULL
SOLUTION VERIFIED QUESTIONS AND
ANSWERS GUARANTEED TO PASS
●● Io's surface appears very smooth because it
Answer: is continuously resurfaced by volcanic activity.
●● While observing the Sun, you note a large number of sunspots. What
can you conclude?
Answer: There are likely to be an above average number of flares and
prominences.
●● If two different stars were to form at the same time, with one three
times as massive as the other, how would the lifetime of the heavier star
compare to that of the less massive one?
Answer: The less massive star would last fifteen times as long as the
more massive one
●● What interesting feature does Saturn's satellite Titan has on its
surface?
Answer: Lakes of liquid methane
,●● Two stars have the same temperature with one having twice the
radius of the other. How do their luminosities differ?
Answer: The larger star is four times brighter.
●● Order the following objects in increasing radius (smallest to largest
size):
Answer: neutron star, white dwarf, Jupiter, Sun
●● Nuclear fusion, the process by which the Sun shines, fuses four
___________ atoms to produce one __________ atom + energy and
some neutrinos.
Answer: hydrogen, helium
●● Since dust scatters blue light more than red light, it is best to observe
in the_________ wavelength to avoid this obscuration.
Answer: infrared
●● What would happen to the planets orbits if the Sun will collapse into
a black hole?
Answer: There will be no change in the orbits of the planets
●● The solar spectrum is a good example of what kind of spectrum?
Answer: absorption line spectrum
, ●● The tail of a comet consist of
Answer: dust and gas
●● Suppose the temperature of the surface of a star were to rise. How
would this affect the star's color and the wavelength of the lines seen in
the spectrum?
Answer: The color will shift to shorter wavelength, but the lines that are
seen will not show any shift
●● If professor Sarajedini were to hover near a black hole while
carrying a standard flashlight, how would her light appear different from
your standard flashlight as you observe her from a safe distance?
Answer: Her light would appear redder.
●● A star has a parallax of 0.1 arcsec. What is its distance?
Answer: 10 parsecs
●● A stellar remnant that is greater than 3 times the mass of the Sun will
become a
Answer: black hole
●● What marks the transition from protostar to star
Answer: hydrogen fusion begins
SOLUTION VERIFIED QUESTIONS AND
ANSWERS GUARANTEED TO PASS
●● Io's surface appears very smooth because it
Answer: is continuously resurfaced by volcanic activity.
●● While observing the Sun, you note a large number of sunspots. What
can you conclude?
Answer: There are likely to be an above average number of flares and
prominences.
●● If two different stars were to form at the same time, with one three
times as massive as the other, how would the lifetime of the heavier star
compare to that of the less massive one?
Answer: The less massive star would last fifteen times as long as the
more massive one
●● What interesting feature does Saturn's satellite Titan has on its
surface?
Answer: Lakes of liquid methane
,●● Two stars have the same temperature with one having twice the
radius of the other. How do their luminosities differ?
Answer: The larger star is four times brighter.
●● Order the following objects in increasing radius (smallest to largest
size):
Answer: neutron star, white dwarf, Jupiter, Sun
●● Nuclear fusion, the process by which the Sun shines, fuses four
___________ atoms to produce one __________ atom + energy and
some neutrinos.
Answer: hydrogen, helium
●● Since dust scatters blue light more than red light, it is best to observe
in the_________ wavelength to avoid this obscuration.
Answer: infrared
●● What would happen to the planets orbits if the Sun will collapse into
a black hole?
Answer: There will be no change in the orbits of the planets
●● The solar spectrum is a good example of what kind of spectrum?
Answer: absorption line spectrum
, ●● The tail of a comet consist of
Answer: dust and gas
●● Suppose the temperature of the surface of a star were to rise. How
would this affect the star's color and the wavelength of the lines seen in
the spectrum?
Answer: The color will shift to shorter wavelength, but the lines that are
seen will not show any shift
●● If professor Sarajedini were to hover near a black hole while
carrying a standard flashlight, how would her light appear different from
your standard flashlight as you observe her from a safe distance?
Answer: Her light would appear redder.
●● A star has a parallax of 0.1 arcsec. What is its distance?
Answer: 10 parsecs
●● A stellar remnant that is greater than 3 times the mass of the Sun will
become a
Answer: black hole
●● What marks the transition from protostar to star
Answer: hydrogen fusion begins
