A high-luminosity star - Correct Answer emits more light than a low-luminosity star
If a red giant appears the same brightness as a red main sequence star, which one is farther away - Correct Answer the red giant
the heaviest nuclei of all are formed - Correct Answer during a supernova exp...
Astro 7N Final Exam Questions
(ANSWERED)
A high-luminosity star - Correct Answer emits more light than a low-luminosity star
If a red giant appears the same brightness as a red main sequence star, which one is
farther away - Correct Answer the red giant
the heaviest nuclei of all are formed - Correct Answer during a supernova explosion
fill in the blank in the following chemical reaction that occurs in the sun - Correct Answer
hydrogen-2 + proton = helium-3 + energy
which of the following has the smallest radius - Correct Answer neutron star
why does the main sequence part of a star's life end? - Correct Answer the hydrogen in
the core is exhausted
which of the following will have the shortest lifetime on the main sequence? - Correct
Answer main sequence star with surface temp of 20000 K
Many of the brightest 100 stars viewed from Earth are not on the main sequence (even
though most stars are) because - Correct Answer the most luminous stars are giants
and supergiants that have already finished their main sequence lifetimes
a 2-solar-mass main sequence stat is at the same distance as a 0.2-solar-mass main
sequence star. Which star appears brighter? - Correct Answer the 2 solar mass main
sequence star appears brighter
the temp of the photosphere of the sun is closest to - Correct Answer 6000 K
An estimate of the number of communicating/technological civilizations that we expect
in our galaxy would be a larger number if - Correct Answer the average number of
planets that could support life for each star were larger
if the sun had twice its mass, then which of these planets would be in its habitable zone
- Correct Answer jupiter
what is the exoplanet's orbital period, and the percent brightness drop in light, for the
case int he image above from the Kepler Exoplanet Transit Hunt activity? - Correct
Answer 5 days and 0.30%
How do astronomers measure the temperature of stars? - Correct Answer by looking at
which absorption lines are present in the star's spectrum
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