Life Cycle of Stars

How bright a star APPEARS is called

• absolute magnitude
• apparent magnitude
• nucleus

The star that appears brightest to us on Earth is

• the Sun
• Sirius
• Polaris

The hottest stars are

• red
• yellow
• blue
• white

The coldest stars are

• red
• yellow
• white
• blue

The brightness of a star is called

• absolute magnitude
• apparent magnitude

This gas is what stars burn into heat and light.

• Helium
• Oxygen
• Hydrogen

The cloud of gas and dust where stars are born is called

• proton star
• nebula
• supernova
• black hole

Our sun will form a black hole when it dies.

• True
• False

When a star dies, it may swell up into a 

• protostar
• Red Giant
• nebula

The most violent explosion in the universe is called a

• protostar
• black hole
• supernova