ASTR Chapter 3
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School
University of Illinois, Urbana Champaign *
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Course
330
Subject
Astronomy
Date
May 7, 2024
Type
Pages
9
Uploaded by StanleyHazel on coursehero.com
5/5/24, 11
:
13 PM
Chapter 3 HW: Attempt review | Moodle-in-Canvas
Page 1 of 9
https://lti.learn.illinois.edu/mod/quiz/review.php
?
attempt=11312011&cmid=1849556
Started on
Monday, 25 March 2024, 10
:
35 PM
State
Finished
Completed on
Monday, 25 March 2024, 10
:
49 PM
Time taken
14 mins 3 secs
Marks
12.00/12.00
Grade
15.00
out of 15.00 (
100
%)
Question 1
Correct
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Question 2
Correct
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Select one:
Stars are formed
a.
Throughout the Milky Way Galaxy
b.
In giant molecular clouds
!
Yes, where gravity coalesced enough material to collapse into a new star.
c.
In isolated regions away from other stars
d.
In large, diffuse clouds
e.
In the Big Bang
Your answer is correct.
The correct answer is: In giant molecular clouds
Select one:
Which stage is NOT
part of the Sun’s life
?
a.
Supernova explosion
!
Correct, the Sun will NEVER be a supernova. That is only for much more massive stars.
b.
Main sequence star
c.
Planetary nebula
d.
White dwarf
e.
Red Giant
Your+answer+is+correct.
The correct answer is: Supernova explosion
5/5/24, 11
:
13 PM
Chapter 3 HW: Attempt review | Moodle-in-Canvas
Page 2 of 9
https://lti.learn.illinois.edu/mod/quiz/review.php
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attempt=11312011&cmid=1849556
Question 3
Correct
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Question 4
Correct
Mark 1.00 out of 1.00
Select one:
What keeps the Sun from collapsing
?
a.
Magnetic field
b.
Temperature
c.
Solid Core
d.
Turbulence
e.
Pressure
!
Yes, pressure from heat, which in turn is caused by fusion.
Your+answer+is+correct.
The correct answer is: Pressure
Select one:
Which one of the following is inarguably necessary for stars to form out of gas clouds
?
a.
Magnetic field
b.
Turbulence
c.
Gravity
!
Yes, you have to have gravity.
d.
Heavy elements.
e.
All of the above.
Your+answer+is+correct.
The correct answer is: Gravity
5/5/24, 11
:
13 PM
Chapter 3 HW: Attempt review | Moodle-in-Canvas
Page 3 of 9
https://lti.learn.illinois.edu/mod/quiz/review.php
?
attempt=11312011&cmid=1849556
Question 5
Correct
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Question 6
Correct
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Select one or more:
Which objects may be produced by a supernova explosion
?
(Hint: Could be more than one.)
a.
White dwarfs
b.
Supergiants
c.
Brown dwarfs
d.
Neutron stars
!
Yes, neutron stars are one possibility, but there is another.
e.
Black holes
!
Yes, black holes are one possibility, but there is another.
Your+answer+is+correct.
The correct answers are: Black holes, Neutron stars
Select one:
What does the phrase "We are star stuff" mean
?
a.
That we are evolved from life forms left on earth by ancient aliens
b.
That the elements that make up our body, other than hydrogen, were produced in the cores of
stars
!
We are star
stuff.
c.
That we go to the University of Illinois
d.
That we are dependent on the energy from the Sun for our existence
e.
That we are all special
Your answer is correct.
The correct answer is: That the elements that make up our body, other than hydrogen, were produced in the cores of stars
5/5/24, 11
:
13 PM
Chapter 3 HW: Attempt review | Moodle-in-Canvas
Page 4 of 9
https://lti.learn.illinois.edu/mod/quiz/review.php
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attempt=11312011&cmid=1849556
Question 7
Correct
Mark 1.00 out of 1.00
Question 8
Correct
Mark 1.00 out of 1.00
Select one:
Which of the following stars is the hottest
?
a.
The Sun
b.
A red star
c.
A blue star
!
Yes, blue stars are the hottest.
d.
A yellow star
e.
An orange star
Your+answer+is+correct.
The correct answer is: A blue star
Select one:
What is the last element to form by fusing in the core of a massive star before it goes supernovae
?
a.
Al
b.
Au
c.
Fe
!
Yes, after iron one needs to take energy to create heavier elements not making energy.
d.
He
e.
H
Your answer is correct.
The correct answer is: Fe
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