Quiz: The Life and Death of Stars: Cosmic Life Cycles

Question 1

What determines the eventual fate of a star?

Accepted Answer

Its mass

Answer

Its color

Answer

Its temperature

Answer

Its rotation speed

Question 2

Which type of star ends its life in a spectacular explosion known as a supernova?

Accepted Answer

Massive star

Answer

Red giant

Answer

Neutron star

Answer

White dwarf

Question 3

What is the remnant left behind after a low-mass star like the Sun exhausts its nuclear fuel?

Accepted Answer

A white dwarf

Answer

A black hole

Answer

A neutron star

Answer

A supernova remnant

Question 4

During which stage of a star's life cycle does it expand to become a red giant?

Accepted Answer

When it exhausts hydrogen in its core

Answer

When it begins hydrogen fusion

Answer

When it enters the main sequence

Answer

When it reaches the end of its life

Question 5

What process occurs during the main sequence stage of a star's life?

Accepted Answer

Hydrogen fusion

Answer

Helium fusion

Answer

Carbon fusion

Answer

Iron fusion

Question 6

Why do massive stars fuse elements up to iron?

Accepted Answer

Because they are hotter and have higher pressure in their cores

Answer

Because they have stronger magnetic fields

Answer

Because they rotate faster

Answer

Because they have more metallic elements

Question 7

What is the primary source of energy for a protostar before it begins nuclear fusion?

Accepted Answer

Gravitational contraction

Answer

Chemical reactions

Answer

Radioactive decay

Answer

Magnetic fields

Question 8

Which of the following is a characteristic feature of a neutron star?

Accepted Answer

It emits pulses of energy as it rotates

Answer

It is visible to the naked eye

Answer

It has a radius of about 10 kilometers

Answer

It can be seen as a blue giant