Chapter 23 Quiz

During a school astronomy project, Elijah asked, 'What is the name of our galaxy?'

• Sol

• Sombrero

• Sagittarius

• Milky Way

• Andromeda

What is the shape of our galaxy?

• Irregular

• Globular

• None of these

• Elliptical

• Spiral

What is the diameter of the Milky Way galaxy?

• 1,000 light-years

• 100,000 light-years

• 10,000 light-years

• 1 million light-years

How many stars are thought to be in the galactic bulge?

• 1 million

• 1 thousand

• 1 trillion

• 1 billion

The rotational velocity of a compression wave relative to the matter of the galaxy is:

• Faster

• The Same

• Differential

• Slower

What is the diameter of our galaxy?

• 10 light years

• 10,000 light years

• 100,000 light years

• 1,000,000 light years

How does the diameter of the galactic disk compare to the height of the galactic halo?

• It is larger

• It is smaller

• It is smaller, but expanding

• It is about the same

What phenomenon describes the effect of a massive object bending the path of light around it?

• Gravitational pull

• Gravitational lensing

• Gravitational shift

• Gravitational wave

The pinwheel-like structures originating near the galactic bulge are called the spiral _______.

• fingers

• phallus

• arms

• hairs

What component of the Milky Way is the Sun located in?

• Galactic Center

• Galactic Halo

• Galactic Disk

• Dark Matter Halo