Show:
Stars
Star Death
Supergiants
Giants
Fun Facts
100
Which is more dense, a nebula or a star?
A star is more dense than a nebula.
100
What happens when a star runs out of fuel?
The star dies and either becomes a supernova if it is a supergiant star, or a planetary nebula if it is a giant star.
100
Name two examples of what can happen after a supernova.
1-Black Hole 2-Neutron star
100
About how big are white and black dwarfs?
They are both about the same size, and they both are about the size of Earth.
100

What are stars made out of?

Stars are made out of gas and dust.

200
What is a nebula?
A place where chemical reactions happen and stars are created.
200
What can escape a black hole?
Nothing can escape a black hole.
200
What causes a supernova?
A supernova is caused when a supergiant star runs out of fuel and explodes.
200
What is a planetary nebula?
A ring-shaped nebula formed by an expanding shell of gas around a old star.
200

A black hole can fit in your pocket. T/F

True

300

The source of energy for stars is the fusion of hydrogen into what?

helium

300
What does a star's mass have to do with its lifespan?
A star with less mass lives longer than a star with more mass.
300

Do black holes have gravity?

Yes, they have immense amounts of gravity.

300

What is a white dwarf?

A dead Red giant that lost its fuel but still looks illuminated since it starts off very hot

300
Which is bigger, a neutron star, or a white dwarf?
A white dwarf is bigger than a neutron star.
400
What is a star called when it is just starting to form, but it hasn't gone through nuclear fusion yet?
It is called a protostar.
400
What happens to a supergiant star after it dies?
It explodes into a supernova.
400
What is a neutron star?
A neutron star is the extremely dense star that remains after a super giant's death. It also spins extremely fast.
400
What is a black dwarf?
A fully dead Red giant.
400

The process by which atoms combine to form heavier atoms is?

Nuclear fusion 

500

What is a failed star called?

a brown dwarf DOUBLE POINTS

500
What are the radio signals that a neutron star emits?
The radio signals are called pulsars.
500

Are red supergiants or blue supergiants hotter?

blue supergiants

500

About how long does it take a white dwarf to become a black dwarf?

about ten to hundreds of billions of years.

500
Does a white dwarf run on fuel?
No, a white dwarf does not run on fuel.