Ch 25

an immense cloud of dust & gas where stars are born

• black hole

• nebula

• prominence

• supernova

Elliptical, spiral, and irregular are all types of ______.

• solar systems
• universes
• galaxies
• stars

What color of star is the hottest?

• Blue
• Red
• Yellow
• Orange

What color of star is the coolest?

• Red
• Yellow
• Blue
• White

The color of the star tells us its 

• composition
• Temperature
• Luminosity 
• Mass

Our galaxy is called the

• Earth Nebula
• The Hubble Galaxy
• The Milky Way
• The Snickers

The Milky Way Galaxy is a 

• spiral
• lenticular
• elliptical 
• irregular

Most distances in space and to stars outside of our solar system are measured using.....

• light-years

• astronomical units

• feet

• meters

Ancient Greeks, Romans, and other early cultures observed patterns of stars in the night sky called __________________.

• constellations

• galaxies

• light-years

• connections

A star is ___________ when the contracting gas and dust from a nebula become so dense that nuclear fusion starts.

• born

• erupted

• beginning

• changing