What is the general result of the proton-proton chain? - Correct Answer 4H = He + energy + other products
The corona of the sun... - Correct Answer is visible during a solar eclipse
In the convection zone of the Sun... - Correct Answer columns of hot gas rise, cool, and descend
What ...
Astro 7N "Copper Quiz Questions" (Units 3
& 4), ASTRO EXAM TWO (ANSWERED)
What is the general result of the proton-proton chain? - Correct Answer 4H = He +
energy + other products
The corona of the sun... - Correct Answer is visible during a solar eclipse
In the convection 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 times further 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 arc-seconds (0.010"). How far away is
Hadar? - Correct Answer 100 pc
Put one of your thumbs at an 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 abut 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
appears brighter and by how much? - Correct Answer Both appear to be the same
brightness.
An 'onion skin' shell burning structure, with elements up to iron being produced,
develops in... - Correct Answer A star much more a massive than the sun
What is at the center of a planetary nebula? - Correct Answer The core of a 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 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 By measuring the
speed of the orbit of a star in a binary system with the black hole
What is the main requirement for a habitual zone? - Correct Answer Liquid water
A star that is twice the mass of our Sun would have a habitable zone that: - Correct
Answer Includes Mars but not the Earth
A star that is 75% the mass of our Sun would have a habitable zone that: - Correct
Answer Includes Venus only
What factor is not in the Drake equation? - Correct Answer Communication lag due to
large distances between stars
What does the Drake Equation estimate? - Correct Answer The number of
technological equations in the Milky Way
What are the differences between open star clusters and globular star clusters? -
Correct Answer Open clusters are less concentrated, younger, and have fewer stars
Which of the following is FALSE? - Correct Answer A nova is more luminous than a
supernova
What kind of a gas cloud can collapse and form stars? - Correct Answer The gas cloud
must have a mass that exceeds the Jeans mass so that gravity overcomes the internal
pressure in the cloud
What is the mass of the black hole at the center of the Milky Way? - Correct Answer 4
million solar masses
How do you measure the mass of the super massive black hole at the center of the
Milky Way? - Correct Answer Look at the orbits of nearby stars and apply Kepler's
Third Law
In the symbol for the Hubble type of a galaxy, SBc, the B denotes... - Correct Answer
The presence of a bar
What happens to planets in a galaxy when that galaxy collides with another galaxy? -
Correct Answer Nothing, because the spaces between stellar systems in a galaxy is
much larger than their size
Which properties of spiral galaxies allow us to sub classify them as Sa, Sb, or Sc? -
Correct Answer Size of bulge, and extent of spiral arms
Compared to spiral galaxies, elliptical galaxies have... - Correct Answer Less gas,
redder colors, and less new star formation
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