Galaxies

Active galaxies are ____ than normal galaxies and are

• dimmer, less active

• dimmer, more active

• brighter, less active

• brighter, more active

Active galaxies are also

• very few in number.

• very great in number.

• sprinkled randomly throughout the universe.

• found near the center of the universe.

Active galaxies emit nonstellar material mostly in the ____ portion of the light spectrum.

• infrared

• ultraviolet

• xray

• gamma ray

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Radio galaxies emit radiation mostly in the _____ portion of the light spectrum.

• infrared

• radio

• xray

• gamma

Tags

NGSS.HS-PS4-4

These objects were first found in the 1950's and are among the most distant ever detected.

• supermassive black holes

• quasars

• active galaxies

• supernovae

Tags

NGSS.HS-ESS1-3

"Quasar" stands for "quasi-stellar object" or "starlike."

• True

• False

What are thought to cause the tremendous energy produced by quasars?

• supermassive black holes

• supernova explosions

• hypernova explosions

• the Big Bang

Galaxies are composed of (best answer)

• stars
• stars and gas
• stars, dust, and gas
• stars, dust, and gas held together by gravity

The Milky Way Galaxy is a 

• spiral
• lenticular
• elliptical 
• irregular

Tags

NGSS.MS-ESS1-2

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational