Life Cycle of a Star

The stable period of a star’s life cycle is called... 

• The birth of a star
• Nebula 
• Neutron star
• Main Sequence 

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? 

• Main Sequence stage
• The death of a star
• Black Hole
• Stellar Nebula

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

What determines the color of a star? 

• It's size
• It's temperature
• It's composition
• They are all the same color 

Hotter stars appear to be what color? 

• Red
• Blue
• Yellow
• Green

Cooler stars appear to be what color? 

• Red
• Blue
• Yellow
• Green

A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star.
What stage in the life cycle does this describe? 

• Supernova
• Black Hole
• Main Sequence
• Red Giant or Red Supergiant

What fuel do stars use? 

• Oxygen
• Hydrogen
• Carbon
• Iron

In a large mass star, the temperature reaches more than 100 billion degrees. The repulsive forces between the iron nuclei explode the star’s mass into space in a ....

• Nebula
• Black Hole
• Supernova
• Neutron star

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

• True
• False