Life Cycle of a Star

Main Sequence

Both Low and High mass have a main sequence phase
Average mass last billions of years
High mass will last MILLIONS of years

Stars will spend most of their life in this phase fusing Hydrogen into Helium through the process of nuclear fusion

Multiple Choice

What is the first stage of the life cycle of a star for all stars?

• nebula
• protostar
• main-sequence
• red giant

Multiple Choice

Low mass stars such as our SUN get swollen and expand into __________ after using up the hydrogen in their core.

• red giants

• supergiants

• white dwarfs

• protostars

Multiple Choice

When a star's gravitational pull is so strong that not even light can escape, it's called a what?

• Black hole
• Supernova
• White dwarf
• Nebula

Multiple Choice

What fuel do stars use? 

• Oxygen
• Hydrogen
• Carbon
• Iron

Multiple Choice

what stage of the life cycle of a star is this? 

• Planetary Nebula
• Black Hole
• Neutron Star
• Giant/Supergiant

Multiple Choice

A white dwarf is the final stage for _________ mass stars like our Sun.

• small/medium
• large
• super massive

Multiple Choice

What spectacular event follows the red super giant phase for a large or massive star when it starts fusing iron in its core?

• Big Bang
• Supernova
• Planetary Nebula

Multiple Choice

The Milky Way Galaxy is a 

• spiral
• lenticular
• elliptical 
• irregular

Multiple Choice

What stage fills in the blank. Nebula --> Main sequence --> red giant --> ______________ --> white dwarf --> black dwaft

• supergiant
• planetary nebula
• black hole
• supernova

Multiple Choice

What is an exploding, high mass star called?

• black hole

• Milky Way

• supernova

• solar system

Multiple Choice

We consider these stars 'dead' because they no longer are carrying out fusion in their cores.

• White Dwarfs
• Red Dwarfs
• Red Giants
• Brown Dwarfs

Multiple Choice

True or False: All stars will eventually become a black hole

• True

• False

Multiple Choice

Which of the following is NOT a final stage of a star. 

• black hole
• black dwarf
• neutron star
• red giant

Multiple Choice

This is a young star that glows as gravity brings it together

• Nebula
• Protostar
• Main-sequence star
• Red giant

Multiple Choice

What is the first stage of the life cycle of a star for all stars?

• nebula
• protostar
• main-sequence
• red giant

Multiple Choice

In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.

• nebula
• protostar
• main-sequence
• supergiant

Multiple Choice

Low mass stars expand into what after using up the hydrogen in their core

• red giants
• supergiants
• white dwarfs
• protostars

Multiple Choice

This stage is when a high mass star explodes

• Supergiant
• Red giant
• Supernova
• Black hole

Multiple Choice

Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for nuclear fusion of hydrogen to begin.
What stage in a stars life cycle is this describing? 

• The birth of a star
• The death of a star
• Black Hole
• Stellar Nebula

Multiple Choice

What fuel do stars use? 

• Oxygen
• Hydrogen
• Carbon
• Iron

Multiple Choice

Larger stars (stars with more mass) have a longer life cycle. 

• True
• False

Multiple Choice

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

• Planetary Nebula
• White Dwarfs
• Main Sequence
• Giants

Multiple Choice

The distance that light travels in one year...

• Light year
• Quantumyear
• Stellar-year
• 1 million kilometers

Multiple Choice

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants