Astronomy Review

The area of the galaxy that has the most dense stars surrounding a supermassive black hole.

• Halo region

• galactic bulge

• galactic disk

• spiral density arms

The area where faint, old stars exists that surrounds the disk & bulge.

• Halo region

• galactic bulge

• galactic disk

• spiral density regions

Our Sun and solar system are located

• near the edge of the Milky Way.

• about 2/3 from the center of the Milky Way.

• near the middle of the Milky Way.

• near the galactic bulge.

The ancient Greeks named the Milky Way after comparing it to

• a Greek god.

• the candy bar.

• a milky white river.

• an ancient galaxy that existed a long time ago.

The Milky Way measures ____ light years in length.

• 26,000

• 1 million

• 1000

• 100 thousand

Figuring out what the Milky Way looks like is difficult because

• we live outside of it.

• it is impossible to send a space probe that far.

• we live inside of it.

• it is full of dark matter.

The Milky Way only measures about ____ light years in thickness.

• 100

• 100,000

• 1000

• 1 million

The Milky Way galaxy is thought to be a(n)

• spiral galaxy

• barred spiral galaxy.

• elliptical galaxy.

• irregular galaxy.

Tags

NGSS.MS-ESS1-2

These type of clusters with variable stars orbit the Milky Way and other galaxies.

• open clusters

• closed clusters

• globular clusters

• stellar associations

Tags

NGSS.HS-ESS1-3

Stars that are located in the galactic disk move

• in mostly random orbits.

• in retrograde orbits.

• in mostly stable or orderly orbits.

• around less massive black holes.

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4