2.3 Galaxies Quiz

What is a galaxy?

• A group of planets

• A group of asteroids

• A group of stars held together by gravity

• A group of comets

Which type of galaxy is characterized by a rotating disk of stars and dust with a dense bulge in the center?

• Dwarf galaxy

• Elliptical galaxy

• Irregular galaxy

• Spiral galaxy

What is the closest major galaxy to our own?

• Triangulum galaxy

• Milky Way galaxy

• Andromeda galaxy

• Whirlpool galaxy

Which type of galaxy is reddish to yellowish in color and contains mostly old stars?

• Dwarf galaxy

• Spiral galaxy

• Irregular galaxy

• Elliptical galaxy

What type of galaxy is the Andromeda Galaxy?

• Spiral galaxy

• Irregular galaxy

• Dwarf galaxy

• Elliptical galaxy

What is the shape of an elliptical galaxy?

• Spiral

• Circular

• Egg-shaped

• Irregular

What type of galaxy is the NGC 1427A galaxy?

• Spiral galaxy

• Elliptical galaxy

• Dwarf galaxy

• Irregular galaxy

What are dwarf galaxies?

• Galaxies with only old stars

• Galaxies with only a few stars

• Small galaxies containing a few million to a few billion stars

• Galaxies with only young stars

What are spiral arms in a galaxy?

• Regions of gas and dust plus old stars that wind outward from the central area bulge

• Regions of old stars that wind outward from the central area bulge

• Regions of gas and dust plus young stars that wind inward towards the central area bulge

• Regions of gas and dust plus young stars that wind outward from the central area bulge

Betelgeuse is classified as a ____________ star.

• Supergiant
• Giant
• White Dwarf
• Main Sequence