H-R Quiz

Blue stars are the _____________.

• hottest
• coolest
• smallest

Which star has the lowest temperature?

• A
• B
• C
• D

The effective temperature of a star is related to its...

• solar system
• luminosity
• absolute magnitude
• color

In which region of the H-R Diagram would you be likely to find the brightest, reddest stars?

• W
• X
• Y
• The orange dashed line

About 90 percent of stars on the H-R diagram are ____ stars.

• red giant
• main sequence
• luminosity
• supergiants

Compared to a red giant star, a blue supergiant is...

• Hotter and brighter

• Hotter and not as bright

• Colder and brighter

• Colder and not as bright

Compared to a white dwarf, a red supergiant is...

• Hotter and brighter

• Hotter and not as bright

• Colder and brighter

• Colder and not as bright

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

• Red

• Yellow

• White

• Blue

Use the Hertzsprung-Russell Diagram to answer the following question.  Betelgeuse is a _____

• Hot and Bright Star
• Cool and Bright Star
• Hot and Dim Star
• Cool and Dim Star

What is luminosity?

• the amount of heat that a star gives off

• the color of the star

• the amount of energy a star emits

• a type of game that you play to build up your brain muscles.