Galaxies and Light Years

The distance light travels in one year

• Proxima Centauri

• 5.5 hours

• light year

A galaxy with "arms" and a dense center: our Milky Way is this type of galaxy

• irregular galaxy

• elliptical galaxy

• spiral galaxy

The closest star to our Sun; it is 4.24 light years away

• Proxima Centauri

• 5.5 hours

• light year

A galaxy with no clear shape; it is the remains of two colliding galaxies

• irregular galaxy

• elliptical galaxy

• spiral galaxy

Oval shaped galaxy that is most abundant in the universe

• irregular galaxy

• elliptical galaxy

• spiral galaxy

Time it takes for the Sun's light to reach Pluto

• Proxima Centauri

• 5.5 hours

• light year

Which letter best represents the location of the Sun in the Milky Way Galaxy?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-2

Which piece of evidence supports the fact that the Milky Way Galaxy is located at position C?

• We live in the center of an elliptical galaxy.

• Our Sun is the brightest star in the Milky Way.

• Our Sun is 2/3 out on one of the arms.

• We live on the very edge of the Milky Way.

Tags

NGSS.MS-ESS1-2

What is the speed at which light travels in space?

• 186,000 meters/sec

• 5.5 miles/hour

• 285,000 miles/hour

• 186,000 miles/sec

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which best explains why a sunset is an optical illusion?

• It takes 8.4 minutes for the sunlight to reach Earth.

• The Sun orbits Earth.

• The Sun is a hologram.

• Sunlight reaches Earth instantaneously.