PhysicsStellar Astrophysics
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Lifecycles of Celestial Bodies Quiz

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#1

Which phase of a celestial body's lifecycle comes after the main sequence?

Red Giant phase
Explanation

Red Giant phase comes after the main sequence.

#2

What is the primary element formed during the fusion process in stars?

Helium
Explanation

Helium is the primary element formed in fusion.

#3

What is the primary process that powers the sun?

Nuclear fusion
Explanation

Nuclear fusion powers the Sun.

#4

What is the predominant factor that determines a star's color during its main sequence phase?

Temperature
Explanation

Temperature determines a star's color.

#5

Which of the following is NOT a type of celestial body?

Galaxy
Explanation

Galaxy is not a type of celestial body.

#6

What is the primary factor that determines the lifespan of a star?

Mass
Explanation

The primary factor is the star's mass.

#7

What type of celestial body is formed when a star's core collapses after a supernova explosion?

Black hole
Explanation

A black hole forms after a supernova explosion.

#8

What is the term for the process by which a star converts hydrogen into helium, releasing energy?

Fusion
Explanation

Fusion is the process of converting hydrogen into helium.

#9

During which phase does a star like the Sun begin to expand and cool?

Red Giant phase
Explanation

The Sun expands and cools during the Red Giant phase.

#10

Which of these is NOT a factor that affects a star's evolution?

Distance from other stars
Explanation

Distance from other stars is not a factor.

#11

What is the name of the phenomenon where two stars orbit around a common center of mass?

Binary star system
Explanation

It's called a binary star system.

#12

Which of the following is NOT a stage in the lifecycle of a star?

Black Hole
Explanation

Black Hole is not a stage in the lifecycle.

#13

What is the end result of a high-mass star's lifecycle?

Black hole
Explanation

The end result is a black hole.

#14

What is the name of the process by which a star sheds its outer layers, forming a planetary nebula?

Mass loss
Explanation

The process is called mass loss.

#15

What factor determines whether a star will end its life as a black hole or a neutron star?

Mass
Explanation

The star's mass determines its fate.

#16

Which of the following is NOT true about white dwarfs?

They fuse helium into heavier elements
Explanation

White dwarfs do not fuse helium.

#17

What is the term for the process by which a white dwarf cools down over billions of years?

Degenerate cooling
Explanation

It's called degenerate cooling.

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