Color of stars
Stellar Brightness
Hr diagram
100

Why do stars have different colors?

Temperature increase 

100

What is stellar brightness?

How bright the star appears 

100

What is a HR diagram

Shows the relationship between a star's temperature and its luminosity 

200

What are the most common star color

red dwarfs

200

What is apparent magnitude of brightness?

The brightness of an object as it appears on earth

200

How are stars classified on the HR diagram? 

From bottom to top in order of decreasing magnitude 

300
What colors can stars be?

Red, orange, yellow, white and blue

300

What is absolute magnitude brightness mean? 

 The apparent magnitude an object would have if it were located at a distance

300

How is the Hr diagram used to identify stars?

To chart the life cycle of stars

400

What is the highest class of stars?

O, B, A, F, G, K, M

400

How do astronomers measure the brightness of a star?

Using the magnitude scale 

500

What is the rarest star classification? 

O classification 

500

What is a light curve?

A graph that shows the brightness of an object over a period of time

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