The Universe

The H-R diagram classifies stars based on what factors?

• Temperature and luminosity

• Number of planets

• What constellation they're in

• Temperature and fusion

Our sun is what kind of star?

• Blue giant

• Red giant

• Main sequence

• White dwarf

Our sun is yellow. A star colder than our sun would be...

• Red

• Yellow

• White

• Blue

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

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

• True
• False

Blue stars are the _____________.

• hottest
• coolest
• smallest

Which star has the lowest temperature?

• A
• B
• C
• D

It is made of ice, dust, and small rocky particles.

• Comet

• Meteor

• Asteroid