Show:
Stars 1
Stars 2
Star Facts 3
Galaxies
Review
100
Which is more dense, a nebula or a star?
A star is more dense than a nebula.
100

What happens when a star starts to run out of fuel?

It expands 

100
Name two examples of what can happen after a supernova.
1-Black Hole 2-Neutron star
100

What is at the center of most galaxies?

Supermassive Black Hole 

100

What protects the Earth from solar flares?

Electromagnetic field

200

What is a nebula?

A place where 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

Name 3 main types of galaxies

Spiral, Elliptical, Irregular 

200

We use these electromagnetic waves for bluetooth and radars.

Radio Waves 

300

What is nuclear fusion?

When two elements or atoms combine and release energy.

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 kind of galaxy is the Milky Way?

Spiral Galaxy 

300

Pluto is a dwarf planet, Name another one

Ceres, Haumea, Makemake, Eris 

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 is a brown dwarf?

An object bigger than a planet but does not have enough energy to emit light

400
What are stars made out of?
Stars are made out of gas and dust.
400

What are galaxies made of?

Dust, gas, stars, solar systems, and dark matter.

400

We experience this type of electro magnetic wave as heat.

Infrared 

500

How does a protostar form?

A cloud of gas and dust collapses due to gravity

500

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.

500
About how long does a supergiant star’s life last?
About 10 million years.
500

What shape are spiral galaxies. 

Flat and pinwheel. 
500

What is the biggest planet in our solar system?

Jupiter