20 questions
A big cloud of dust and gas where all
stars begin their life cycle is called a
solar system
universe
galaxy
nebula
Stars are made mostly
of which two elements?
Hydrogen and helium
Hydrogen and oxygen
Nitrogen and helium
Nitrogen and oxygen
Which is the stage where a massive star
explodes and releases a lot of energy?
Red supergiant
Supernova
Black hole
Main sequence
In about 5 billion years, our sun will
grow 100 times its size into its
next stage called a
Supernova
Neutron star
Red giant
White dwarf
What color are the hottest stars?
Blue-white
Yellow
Blue
Red
Which of the following is the correct
order of the life cycle of our sun?
yellow star, red giant, white dwarf
yellow star, white dwarf, red giant
white dwarf, yellow star, red giant
yellow star, red giant, supernova
An early stage in the formation
of a star before nuclear synthesis
begins is called a(n)
Protostar
Supernova
Neutron star
Black hole
When a star runs out of hydrogen gas to
fuse, what element must then be fused
in order to form a Red Giant?
Nitrogen
Oxygen
Iron
Helium
During which phase does the core of a
massive star have so much gravity that
even light can’t escape?
Supernova
Black hole
White dwarf
Neutron star
What leads directly to the formation
of black holes?
Neutron Star
Planetary nebula
Supernova
Blue giant
The biggest most massive stars in the
universe are known as
Blue giants
Red giants
White giants
Red supergiants
The ejected outer shell of gas formed
by an aging star is called a(n)
Planetary nebula
Oort cloud
Star cluster
Galaxy
A small dense star, about the size of a
planet, that forms when a low-mass star
runs out of nuclear fuel is called a(n)
Neutron star
White dwarf
Yellow star
Black hole
Our sun is currently in which
phase of its life cycle?
White dwarf
Protostar
Red Giant
Yellow star
Why do massive stars have shorter
life-spans than average stars?
They have less steps in their life-cycle
They have less fuel to burn
They burn through their fuel faster
They are cooler
When a supernova collapses, it can
squeeze electrons and protons together
into which type of star?
White dwarf
Neutron star
Black dwarf
Protostar
After billions of years go by, a white
dwarf will cool into a burnt out cinder.
This remnant is known as a(n)
Brown dwarf
Dwarf planet
Black hole
Black dwarf
Why is a black hole called “black”?
It has too much radiation
It absorbs all the light that hits it
It is black and it is a hole
Outer space is dark
What is a star?
A cloud of particles held together
by its own gravity
A ball of gas
A large sphere of gas
that makes its own light
A nuclear explosion caused
by hydrogen on another planet
What is the heaviest element that
can be created inside a star?
Silver
Iron
Carbon
Gold