Galaxies and Stars Review

Galaxies are composed of (best answer)

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

Tags

NGSS.MS-ESS1-2

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

Tags

NGSS.MS-ESS1-2

Galaxies occur in groups called

• galactic clusters
• Magellanic clouds
• nebula

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

Tags

NGSS.MS-ESS1-2

Where can the Solar System be found when looking at the Milky Way from above?

• In the center of the galaxy
• On the edge of the galaxy
• About 2/3rds of the way out from the center
• About 1/3rd of the way out from the center

Tags

NGSS.MS-ESS1-2

The name of our galactic cluster is "The Local Group".

• True
• False

What force holds the contents of galaxies together?

• The weak nuclear force
• The electromagnetic force
• Gravity
• The strong nuclear force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Felix examined several photos of stars. To compare their temperatures, he looked at the colors of the stars. He organized the photos in order from coolest to hottest. Which of these answers shows the correct order?

• red, yellow, white, blue

• white, blue, yellow, red

• yellow, white, blue, red

• blue, yellow, white, red

Absolute magnitude is defined as…

• mass of a star

• color of a star

• brightness of a star, as it appears from Earth

• brightness of a star independent from the distance of Earth

About 90 percent of the stars in the universe, including the sun, are main sequence stars. What do all main sequence stars have in common?

• All main sequence stars are yellow like our sun.

• All main sequence stars are as bright as our sun.

• They are all undergoing fusion of helium into carbon within their cores

• They are undergoing fusion of hydrogen into helium within their cores

Tags

NGSS.HS-ESS1-1