Stars and Galaxies

What is the main element in a stars composition? 

• Hydrogen 
• Helium 
• Lithium 
• Heavy Elements 

Is the sun a star?

• yes
• no

The color of the star tells us its 

• composition
• Temperature
• Luminosity 
• Mass

The hottest color star is 

• Blue
• White
• Yellow
• Red

The only objects in our Universe that produces and emits its own light is

• Nebulas
• Comets
• Planets
• Stars

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

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

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

True or False:
Star patterns are called constellations.

• T
• F

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

• gas giant
• solar dust
• solar cloud
• nebula