The universe

Which star has the lowest luminosity?

• A
• B
• C
• D

Which star has the lowest temperature?

• A
• B
• C
• D

Which star is considered a Main Sequence Star?

• A
• B
• C
• D

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

As the moon's shape appears to get smaller, we say that the moon is _.

• swelling
• waxing
• waning
• disappearing

About how long does it take the moon to make one complete cycle around the earth?

• 65 days
• 8 days
• 365 days
• 28 days

Phases of the moon in which the moon appears to be getting larger are referred to as _.

• waxing
• waning
• new
• eclipse

Does this picture represent a waxing or waning moon?

• waxing 
• waning

What is the difference between a gibbous moon and a crescent moon?

• The gibbous shows more than half of the bright side of the moon.
• The crescent shows more than half of the bright side of the moon.
• The gibbous shows less than half of the bright side of the moon. 

When can a lunar eclipse occur?

•  waxing gibbous
• full moon
• new moon
• first quarter