Chapter 23 Review

What is the name of our galaxy?

• Andromeda

• Sagittarius

• Sombrero

• Milky Way

Tags

NGSS.MS-ESS1-2

What is the general shape of our galaxy?

• Spiral

• Elliptical

• Irregular

• Globular

• None of these

How far is our Sun from the galactic center?

• 10 pc

• 8 kpc

• 30 kpc

• 3 pc

• 150 kpc

Which of these best describes Sol’s region in the galaxy?

• Galactic Halo

• Galactic Disk

• Galactic Bulge

• Dark Halo

Our galaxy is around _______________ years old.

• 13 million

• 13 billion

• 13 trillion

• 130 trillion

• 130 million

Where are O- and B-type stars most likely to be found?

• Galactic halo

• galactic disk

• galactic bulge

• dark halo

Which of these objects best reflects the shape of the galactic bulge?

• discus

• football

• bat

• dumbbell

• soccer ball

What type of “star” is thought to lie at the center of our galaxy?

• Brown dwarf

• white dwarf

• neutron star

• black hole

• pulsar

How does the age of stars in the galactic halo compare to the age of stars in the galactic disk?

• They are older.

• They are younger

• They are about the same age

• Impossible to tell

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

• 1 thousand

• 1 million

• 1 billion

• 1 trillion