Milky Way Galaxy

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

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

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

• 100

• 100,000

• 1000

• 1 million

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

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

• spiral galaxy

• barred spiral galaxy.

• elliptical galaxy.

• irregular galaxy.

Tags

NGSS.MS-ESS1-2

Our Sun and solar system lies within the ____ arm of the Milky Way galaxy.

• Cygnus

• Perseus

• Sagittarius

• Orion

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

The Sun takes about ____ million years to orbit the galaxy once (or a galactic year).

• 100

• 225

• 300

• 425

Tags

NGSS.HS-ESS1-4

Galaxies are colossal collections of stars, gas & dust held together by _____.

• space/time

• gravity

• black holes

• dark matter

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4