Unit 5C Components of the Universe

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

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

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

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants

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

• True
• False

Which star has the lowest temperature?

• A
• B
• C
• D

Which spectral class does our star, the sun, belong to?

• M
• K
• G
• F

After a supergiant, a high mass star explodes and forms a

• supernova
• red giant
• black hole
• planetary nebula

A high mass star can end as this stage, which is so dense that not even light can escape!

• black dwarf
• white dwarf
• supernova
• black hole

What is a supernova?

• The measure of brightness of a star.

• Something that only low mass stars can do.

• A star that explodes, creating a great amount of light and energy.