Universe Galaxies Stars Hr Diagram

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get hotter

Which star is the coldest?

• Yellow Star
• Red Star
• Orange Star
• Blue Star

The category that contains the most stars is...

• Main Sequence
• Supergiants
• Giants

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants

Compared to the rest of the stars, our sun is considered...

• Extremely Large and Cold
• Small with a medium temperature
• Medium size with medium temperature

As a whole, Giants are considered hotter than White Dwarfs.

• True
• False

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? 

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

Hotter stars appear to be what color? 

• Red
• Blue
• Yellow
• Green

What determines the color of a star? 

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