Astro 101 - Final exam 2026 Questions and Answers Graded A+

Astro 101 - Final exam 2026 Questions
and Answers Graded A+

Stars that produce energy from hydrogen fusion are,

white dwarfs

high-mass stars

all main sequence stars.

low-mass stars - Correct answer-All main sequence stars

Which of the following objects could be associated with the evolution of a high-

mass star?

A Planetary Nebula

A Pulsar

A Supernova Remnant

A White Dwarf - Correct answer-A pulsar

A supernova Remnant



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,Which type of galaxies appear to have many young stars?

Disk Galaxies

Elliptical Galaxies

Both Elliptical and Disk Galaxies - Correct answer-Disk Galaxies

Do the galaxies you identified in the previous question also contain old stars?

Yes

No

Can't tell - Correct answer-Yes

Which type of galaxies are more likely to show evidence of dust?

Disk Galaxies

Elliptical Galaxies

Both Elliptical and Disk Galaxies - Correct answer-Disk Galaxies

If a galaxy is experiencing active star formation, it must contain,

cool, dense gas.

hot gas.

Can't tell. - Correct answer-cool, dense gas.


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, Which type of galaxies have cool, dense gas available for star formation?

Disk Galaxies

Elliptical Galaxies

Both Elliptical and Disk Galaxies - Correct answer-Disk Galaxies

Which type of galaxy shows evidence of significant numbers of O-stars and M-

stars?

Disk Galaxies

Elliptical Galaxies

Both Elliptical and Disk Galaxies

Neither Type of Galaxy - Correct answer-Disk Galaxies

Which type of galaxy is likely to contain many M-stars but few O-stars?

Elliptical Galaxies

Disk Galaxies

Both Elliptical and Disk Galaxies

Neither Type of Galaxy - Correct answer-Elliptical Galaxies




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