Stars & Galaxies

What is the main element in a stars composition? 

• Hydrogen 
• Helium 
• Lithium 
• Heavy Elements 

The color of the star tells us its 

• composition
• Temperature
• Luminosity 
• Mass

The hottest color star is 

• Blue
• White
• Yellow
• Red

Our star is a 

• yellow/ large star
• yellow/ small star
• yellow/ medium star

What do we use to classify the temperature, brightness, and size of stars?

• Color
• The star's shape
• H-R Diagram

Which measurements allows astronomers to compare the brightness of stars?

• parallax
• red shift
• absolute magnitude
• apparent magnitude

Which statement describes stars from coolest to hottest?

• blue, white, red, orange
• white, yellow, orange, red
• orange, yellow, blue white
• red, orange, yellow, white, blue

Galaxies are composed of 

• millions of stars
• trillions of stars
• billions of stars, dust and gas

What is the term used for a cloud of gas and dust?

• gas giant
• solar dust
• solar cloud
• nebula

Which star has the lowest luminosity?

• A
• B
• C
• D