Astronomy 1st Unit Review

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

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

Which of these stars is hottest?

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

Which star is the coldest?

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

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
• Extremely Small with a Hot Temperature

• There is no way to compare stars

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants

The category that contains the most stars is...

• Main Sequence
• Supergiants
• Giants
• White Dwarfs

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

• True
• False

Red stars are the _____________.

• hottest
• coolest
• biggest
• brightest

Blue stars are the _____________.

• hottest
• coolest
• smallest
• Biggest

Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?

• Betelguse
• Sirius B
• Procyon B
• Barnard's star