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ASTR 1020 FINAL EXAM WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|NEWEST|GUARANTEED PASS |LATEST UPDATE$17.99
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ASTR 1020 FINAL EXAM WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|NEWEST|GUARANTEED PASS |LATEST UPDATE
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Course
ASTR 1020
Institution
ASTR 1020
ASTR 1020 FINAL EXAM
WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|FREQUENTLY TESTED QUESTIONS
AND SOLUTIONS |ALREADY GRADED
A+|NEWEST|GUARANTEED PASS
|LATEST UPDATE
ASTR 1020 FINAL EXAM 2024-2025
WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|FREQUENTLY TESTED QUESTIONS
AND SOLUTIONS |ALREADY GRADED
A+|NEWEST|GUARANTEED PASS
|LATEST UPDATE
Rank the colors of light according to how much will be transmitted through to the other side of the
cloud
least gets through
purple
blue
green
yellow
orange
red
IR
Most gets through
A molecular could fragments as it collapses because
density variations from place to place grow larger as the cloud collapses
The lifetime of a star as it moves right on the Main Sequence
gets older
bipolar refers to outflows that
point in opposite directions
1|Page
, Why do scientists want to identify interstellar dust grains?
To use them to learn the history of past events they were a part of
How were these dust grains distinguished from Solar System grains?
There were chemical signs that suggested they were of interstellar origin
Why can't scientists do a complete analysis on dust grains?
The technology doesn't exist to analyze something that small in detail without destroying it
How did volunteer "citizen scientists" assist with the project on dust grains?
They found trails left by dust particles on microscope scans
More massive stars emit _____ energy and run out of hydrogen fuel in their cores ______
more, faster
More massive stars have _____ main-sequence lifetimes because they burn through their fuel at a ____
rate
shorter, faster
When the core of a star runs out of fuel and nuclear fusion stops, what will happen to the star?
it will collapse
why does a star expand in size during the red giant phase?
The hydrogen shell burning is producing more total energy than the core burning hydrogen did
How will the gravitational force on a piece of the surface of the star (m1) by the mass of the rest of the
star (m2) (effectively located at a point at the center of the star) compare between the AGB and main-
sequence phases of a particular star, assuming its mass stays the same?
the surfaces will feel a weaker gravitational force during the AGB phase because it is farther from the
center of the star
White dwarfs are ____ than stars in other stages at the same temperatures because they are _____
fainter, smaller
Taking into consideration all the forces acting on each piece of the white dwarf, what will happen to it as
it cools?
it will stay constant in size
As material from the outer envelope of the larger star builds up on the surface of the white dwarf, its
temperature and density increase continuously. Under this scenario, what is the first event that will
eventually happen?
Hydrogen on the surface of the white dwarf will undergo nuclear fusion.
2|Page
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