Star Distance, Galaxies and the Universe

The parallax of a star is observed because

• all stars have the same apparent brightness.

• parallax increases with distance.

• stars do not move.

• the observer moves.

What brightens and fades in a regular pattern? 

• The sun 
• A Cepheid variable 
• A shiny rock 
• Light year 

Galaxies that are redshifted are:

• actually blue.
• really far away.
• invisible.
• moving away from us.

Tags

NGSS.HS-ESS1-2

Which is NOT a type of galaxy?

• Elliptical
• Spiral
• Oblong
• Irregular

Tags

NGSS.MS-ESS1-2

What type of galaxy is this?

• Spiral

• Elliptical

• Irregular

• Barred Spiral

Tags

NGSS.MS-ESS1-2

How many stars are in a galaxy.

• millions or billions
• thousands
• hundreds
• Ten

The most abundant type of galaxy in the universe is an...

• Spiral Galaxy
• Elliptical Galaxy
• Irregular Galaxy

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

The type of galaxy that is composed of the older stars and low-mass stars.

• Spiral
• Elliptical
• Irregular
• Constellation

What type of galaxy is this?

• Irregular

• E0

• Sb

• SBc