Galaxies

A galaxy is a large collection of stars, gas and dust. What is responsible for holding the stars, gas, and dust together in a galaxy?

• heat
• light
• gravity
• friction

What type of galaxy is the Milky Way?

• Spiral

• Elliptical

• Irregular

• Transition

Galaxies occur in groups called

• galactic clusters
• Magellanic clouds
• nebula

This type of galaxy is generally considered to be older and is no longer forming stars.

• Spiral

• Irregular

• Elliptical

• Transition Galaxies

Types of galaxies include all of the following EXCEPT... 

• Spiral
• Elliptical 
• Irregular
• Galactic

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

The universe is expanding.

• True 
• False

What are the the 3 types of galaxies?

• Spiral Galaxies, Regular Galaxies, and Lliptical Galaxies
• Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies
•  Milky Way, Elliptical Galaxies, and Spiral Galaxies
• Milky Way, Elliptical Galaxies, and Irregular Galaxies

The name of our galaxy is the

• Andromeda
• Milky Way
• Magellan
• Whirlpool

How many stars make up our galaxy?

• 200
• 200,000
• 200 million
• 200 billion