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Astro 7n Copper Questions Exam 2
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Astro 7n Copper Questions Exam 2
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Astro 7n Copper Questions Exam 2What is the general result of a proton-proton chain? - correct answer-4 H->He + energy +
other products
The corona of the sun: - correct answer-is visible during a solar eclipse
In the convective zone of the Sun: - correct answer-columns of hot gas rise, cool, and
descend
What part of the Sun do we typically see? - correct answer-photosphere
In nuclear fusion, energy is produced because... - correct answer-the mass of the reacting
chemicals is larger than that of the products
When using different points in the Earth's orbit as a baseline for a parallax experiment it is
best to do the observations: - correct answer-6 months apart
One star is four time farther away than another. The parallax angle of the more distant star
is: - correct answer-four times smaller than that of the nearer star
the parallax angle for the star Hadar is 0.010 arcseconds (0.010"). How far away is Hadar? -
correct answer-100 pc
Put one of your thumbs at arm's length in front of your face. Now focus on something in the
background and look through one eye at a time. What do you notice about your thumb? -
correct answer-It appears to move more when it's closer
Star A is 4 times as luminous as Star B. Star A is 2 times as far away as Star B. Which star
appears brighter and by how much? - correct answer-The stars appear the same brightness.
find the hottest star - correct answer-1
find the star with spectral type F0 on the main sequence - correct answer-4
find the star with the lowest luminosity - correct answer-6
Find the main sequence star with the temperature 16,000k - correct answer-2
find the star with a temperature of 3000k and a luminosity of 50 solar luminosities - correct
answer-7
find the star with the lowest mass - correct answer-6
find the red giant star with the largest radius - correct answer-8
, find the bluest star - correct answer-1
find the star with largest radius - correct answer-8
find the star with the longest lifetime - correct answer-6
find the sun - correct answer-5
find the star which would appear brightest if all were at the same distance - correct answer-8
find the white dwarf - correct answer-10
find the B5 type star with a radius of 80 solar radii - correct answer-9
find the main sequence star with 500x the luminosity of the sun - correct answer-2
find the closest main sequence star, if all of them have the same apparent brightness -
correct answer-6
find the main sequence star with a radius of 2 solar radii - correct answer-4
find the star whose temperature is closest to 10,000k - correct answer-3
find the coolest star - correct answer-8
find the main sequence star that is the farthest away, it all appear the same brightness -
correct answer-1
An "onion skin" shell burning structure, with elements up to iron being produced, develops in:
- correct answer-a star much more massive than the sun
What is at the center of a planetary nebula? - correct answer-the core of the dying star and
something that will eventually become a white dwarf
How do solar-sized and smaller stars die? About how large are their remnants? - correct
answer-They become white dwarfs, about the size of the earth
what does not happen when an object approaches a black hole? - correct answer-it quickly
gets sucked in even from a large distance
how can we measure the mass of a black hole? - correct answer-measure the speed of the
orbit of a star in a binary system with the black hole
What is the main requirement for a habitable zone? - correct answer-liquid water
a star that is twice the mass of our sun would have a habitable zone that includes - correct
answer-includes mars but not earth
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