Answer Options:
True
\nFalse
Answer: False
Question: True or False? The majority of the uninsured population is comprised of females.
Answer Options:
True
\nFalse
Answer: False
Question: When referring to stars, what is the difference between apparent brightness and luminosity?
Answer Options:
Luminosity is the total amount of nuclear fusion reactions generated by the star per second. Apparent brightness is the amount of the star’s energy per second received at all wavelengths.
\nLuminosity is the total amount of energy at all wavelengths that the star emits per second. Apparent brightness is the amount of energy that the star emits per second that is received here on Earth.
Answer: Luminosity is the total amount of energy at all wavelengths that the star emits per second. Apparent brightness is the amount of energy that the star emits per second that is received here on Earth.
Question: Two stars are on the main sequence. Star 1 is spectral type B2, while Star 2 is spectral type K0. Therefore, Star 1 is larger in mass than Star 2.
Answer Options:
There is not enough information to correctly answer this question.
\nThis is a true statement.
\nThis is a false statement.
\nBoth stars would be roughly the same mass.
Answer: This is a true statement.
Question: Two stars are on the main sequence. Star 1 is spectral type B2, while Star 2 is spectral type K0. Therefore, Star 1 is larger in radius than Star 2.
Answer Options:
There is not enough information to correctly answer this.
\nThis is a true statement.
\nBoth stars would be roughly the same radius.
\nThis is a false statement.
Answer: This is a true statement.
Question: What determines if an object is a brown dwarf or a star?
Answer Options:
The object’s composition and whether it allows for excellent bonding.
\nThe object’s ability to fuse new elements within its core through nuclear fusion.
\nThe object’s surface temperature and whether it can sustain deuterium dust in its atmosphere.
\nThe object’s internal temperature and whether it can sustain hydrogen fusion in the core.
Answer: The object’s internal temperature and whether it can sustain hydrogen fusion in the core.
Question: The Sun’s luminosity is…
Answer Options:
1 M☉
\n5 solar masses
\n1 absolute magnitude
\n1 L☉
Answer: 1 L☉
Question: The three types of binary stars are…
Answer Options:
eclipsing
\nspectroscopic
\nvisual
\nDoppler
Answer: eclipsing
\nspectroscopic
\nvisual
Question: Which of the following cannot be determined from the spectrum of a star?
Answer Options:
chemical composition
\nvibration rate
\nproper motion
\nradial velocity
\nsurface temperature
Answer: proper motion
Question: A spectroscopic binary is…
Answer Options:
A binary star in which the components are not seen separately, but whose binary nature is indicated by periodic variations in radial velocity (changes in the Doppler shift of the spectral lines), indicating orbit motion.
\nA convenient fiction. There are no such things as spectroscopic binary star systems. Astronomers use these for computation only.
\nA binary star in which the plane of revolution of the two stars is nearly edge-on to our line of sight, so that periodically, one star blocks the light of the other by passing in front of it.
\nA binary star in which the two components are telescopically resolved (can be seen individually).
Answer: A binary star in which the components are not seen separately, but whose binary nature is indicated by periodic variations in radial velocity (changes in the Doppler shift of the spectral lines), indicating orbit motion.
Question: True/False: A star that is massive enough to sustain nuclear fusion in its core is a brown dwarf.
Answer Options:
True
\nFalse
Answer: False
Question: Match the person to their scientific accomplishment.
Answer Options:
Annie Jump Cannon – Arranged spectral sequence b
\nWilliamina Fleming – Arranged spectral sequence b
\nEdward Pickering – Hired the Harvard Computers
\nJames Lick – Financed building world’s larg
Answer: Annie Jump Cannon – Arranged spectral sequence b
\nWilliamina Fleming – Arranged spectral sequence b
\nEdward Pickering – Hired the Harvard Computers