Universe and Galaxy

What is a large grouping of stars, dust, and gas bound together by gravity?

• Nebula
• Galaxy
• Cosmology
• Gravity

The Milky Way Galaxy is most likely 

• an irregular galaxy
• a spiral galaxy
• an elliptical galaxy
• a nebula

Tags

NGSS.MS-ESS1-2

Gravity holds galaxies together in clusters

• False

• True

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Which one is an irregular galaxy?

• 
• 
• 
• 

What is located at the center of our galaxy?

• The sun

• A very large black hole

• A void of empty space

• The constellation Cancer

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

What kind of galaxy is this?

• Ring
• Irregular
• Spiral
• Elliptical 

What kind of galaxy is this?

• Peculiar
• Active Galaxy: Quasar
• Spiral
• Elliptical 

What provides evidence that the Universe is expanding?

• most galaxies are moving toward us.

• of cosmic background radiaiton

• distant galaxies appear to moving away from us

• most stars are moving toward us.

Tags

NGSS.HS-ESS1-2

Which of the following techniques can give us the speed of a star relative to us?

• Stellar Parallax
• Standard Candles
• Doppler Shift (Red Shift)

Tags

NGSS.HS-PS4-3