Stellar Astrophysics MCQs with Answers

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Stellar Astrophysics Online Quiz

By presenting 3 options to choose from, Stellar Astrophysics Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Stellar Astrophysics Questions and Answers and click over the correct answer.

• Test Name: Stellar Astrophysics MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Stellar Astrophysics

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1 / 40

What kind of object is a quasar?

A type of neutron star

A young star cluster

An extremely bright and distant active galactic nucleus

2 / 40

What is the fate of our Sun?

It will become a neutron star

It will become a black hole

It will become a white dwarf

3 / 40

What is the primary source of energy for a main-sequence star?

Helium fusion

Hydrogen fusion

Carbon fusion

4 / 40

Which process powers the Sun?

Chemical combustion

Nuclear fusion

Nuclear fission

5 / 40

What determines the lifespan of a star?

Its composition

Its temperature

Its mass

6 / 40

What is the term for the brightness of a star as seen from Earth?

Apparent magnitude

Luminosity

Absolute magnitude

7 / 40

What is the apparent change in position of a star due to Earth's orbit?

Parallax

Proper motion

Doppler effect

8 / 40

What is the term for the distance light travels in one year?

Astronomical unit

Light year

Parsec

9 / 40

What is a pulsar?

A rotating neutron star emitting beams of radiation

A dying red giant

A young, hot star

10 / 40

What is the most abundant element in the Sun?

Helium

Hydrogen

Carbon

11 / 40

What is the main sequence lifetime of a star like the Sun?

Approximately 10 billion years

Approximately 100 billion years

Approximately 1 billion years

12 / 40

What is the process by which stars form?

Collision of stars

Gravitational collapse of gas clouds

Fusion of asteroids

13 / 40

What is a black hole?

A region of space where gravity is so strong that nothing can escape

A collapsed white dwarf

A large, dark star

14 / 40

What is the term for the actual brightness of a star?

Apparent magnitude

Luminosity

Absolute magnitude

15 / 40

What is the name of the region around a black hole beyond which nothing can escape?

Singularity

Accretion disk

Event horizon

16 / 40

What is a white dwarf?

A small, dense star remnant

A type of neutron star

A star in the main sequence

17 / 40

What is the closest star to Earth?

Proxima Centauri

Alpha Centauri A

The Sun

18 / 40

What is the spectral type of the hottest stars?

M-type

G-type

O-type

19 / 40

What type of galaxy is the Milky Way?

Spiral

Irregular

Elliptical

20 / 40

What is the term for a sudden outburst of energy from the Sun?

Supernova

Nova

Solar flare

21 / 40

What is a neutron star?

A young, hot star

A type of red giant

A star composed primarily of neutrons

22 / 40

What is the closest galaxy to the Milky Way?

Triangulum Galaxy

Andromeda Galaxy

Large Magellanic Cloud

23 / 40

What is a binary star system?

A single star with a large planet

Two stars orbiting a common center

A star with a black hole companion

24 / 40

What phenomenon causes a star to twinkle?

Gravitational waves

Magnetic fields

Atmospheric turbulence

25 / 40

Which spectral class is the hottest?

B

M

O

26 / 40

What is the term for the balance between gravity and pressure in a star?

Thermal equilibrium

Hydrostatic equilibrium

Dynamic equilibrium

27 / 40

What is the surface temperature of the Sun?

5,778 K

10,000 K

4,000 K

28 / 40

What is the Hertzsprung-Russell diagram used for?

Determining star compositions

Measuring distances to stars

Classifying stars based on their luminosity and temperature

29 / 40

What is the process by which heavier elements are formed in stars?

Fission

Fusion

Nucleosynthesis

30 / 40

What is the main sequence in the Hertzsprung-Russell diagram?

The region of giant stars

The end stage of stellar evolution

Where stars spend most of their lives

31 / 40

What is the primary component of a neutron star?

Neutrons

Protons

Electrons

32 / 40

What element do stars primarily produce during their lifetime?

Helium

Oxygen

Carbon

33 / 40

What is the typical end state of a low-mass star?

Neutron star

Black hole

White dwarf

34 / 40

What is the remnant of a supernova?

White dwarf

Red giant

Neutron star or black hole

35 / 40

What type of star is the Sun?

Blue giant

Red dwarf

G-type main-sequence star (G dwarf)

36 / 40

What is a supernova?

The explosion of a massive star

The collapse of a white dwarf

The formation of a new star

37 / 40

What is the Chandrasekhar limit?

The mass of the Sun

The maximum mass of a stable white dwarf

The minimum mass of a star

38 / 40

What is the primary factor that determines a star's color?

Its surface temperature

Its composition

Its size

39 / 40

What is the core temperature of the Sun?

1 million K

5,000 K

15 million K

40 / 40

What is a red giant?

An aging star in the later stage of its life

A newly formed star

A young, hot star

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