Life Cycle of a Star

What is an exploding star called?

• black hole

• Milky Way

• supernova

• solar system

A star is born when it begins...

• nuclear fusion
• nuclear abrasion
• chemical reaction
• nuclear fission

Our sun and most stars are in what stage of their life cycle?

• Planetary Nebula
• White Dwarfs
• Main Sequence
• Giants

A star begins to die when it....

• becomes super massive

• creates energy from the core

• has luminosity

• runs out of fuel

The main element used to fuel a star during the majority of its life is:

• Helium
• Iron
• Light
• Hydrogen

What is the first stage of the life cycle of every star?

• nebula

• protostar

• main-sequence

• red giant

This type of star has a gravitational pull that is so strong, not even light can escape. What is this called?

• Black hole

• Supernova

• White dwarf

• Nebula