Life Cycle of Stars

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

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

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