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UW ASTR 101 Exam 2 [Week 6-9] Questions
and Correct Answers
Stars that produce energy from hydrogen fusion are,
a. all main sequence stars.
b. low-mass stars
c. high-mass stars
d. white dwarfs Ans: a
Match the type of star with its stellar end-point.
A low-mass star, like the Sun:
A high-mass star:
An extremely high-mass star:
Choices: neutron star, white dwarf, black hole Ans: A low-mass
star, like the Sun: white dwarf
A high-mass star: neutron star
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An extremely high-mass star: black hole
Which of the following objects could be associated with the
evolution of a high-mass star?
a. A Planetary Nebula
b. A Pulsar
c. A Supernova Remnant
d. A White Dwarf Ans: b and c
An astronaut who fell into a black hole would be stretched
because,
a. the force of gravity increases quickly over short distances.
b. the force of gravity is very strong near a black hole.
c. black holes rotate rapidly, dragging and stretching spacetime
around them.
d. time is slower near the black hole's event horizon. Ans: a
If the Sun collapsed to a black hole today, how would it affect the
Earth?
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a. It would be dark.
b. The Earth's orbit would shrink.
c. The Earth's orbit would widen.
d. People, farm animals, and other small things would literally get
sucked right off the Earth. Ans: a
Which type of galaxies appear to have many young stars?
a. Disk Galaxies
b. Elliptical Galaxies
c. Both Elliptical and Disk Galaxies Ans: a
Do the galaxies you identified in the previous question also
contain old stars?
a. Yes
b. No
c. Can't tell Ans: a
Which type of galaxies are more likely to show evidence of dust?
© 2025 All rights reserved
UW ASTR 101 Exam 2 [Week 6-9] Questions
and Correct Answers
Stars that produce energy from hydrogen fusion are,
a. all main sequence stars.
b. low-mass stars
c. high-mass stars
d. white dwarfs Ans: a
Match the type of star with its stellar end-point.
A low-mass star, like the Sun:
A high-mass star:
An extremely high-mass star:
Choices: neutron star, white dwarf, black hole Ans: A low-mass
star, like the Sun: white dwarf
A high-mass star: neutron star
© 2025 All rights reserved
, 2 | Page
An extremely high-mass star: black hole
Which of the following objects could be associated with the
evolution of a high-mass star?
a. A Planetary Nebula
b. A Pulsar
c. A Supernova Remnant
d. A White Dwarf Ans: b and c
An astronaut who fell into a black hole would be stretched
because,
a. the force of gravity increases quickly over short distances.
b. the force of gravity is very strong near a black hole.
c. black holes rotate rapidly, dragging and stretching spacetime
around them.
d. time is slower near the black hole's event horizon. Ans: a
If the Sun collapsed to a black hole today, how would it affect the
Earth?
© 2025 All rights reserved
, 3 | Page
a. It would be dark.
b. The Earth's orbit would shrink.
c. The Earth's orbit would widen.
d. People, farm animals, and other small things would literally get
sucked right off the Earth. Ans: a
Which type of galaxies appear to have many young stars?
a. Disk Galaxies
b. Elliptical Galaxies
c. Both Elliptical and Disk Galaxies Ans: a
Do the galaxies you identified in the previous question also
contain old stars?
a. Yes
b. No
c. Can't tell Ans: a
Which type of galaxies are more likely to show evidence of dust?
© 2025 All rights reserved
