Astronomical Units 9th Grade

A light year is the 

• distance that light travels in one year
• Speed at which light travels 

The average distance between the earth and the sun is the 

• astronomical unit 
• Light year

Tags

NGSS.MS-ESS1-3

The distance light can travel in one year is ______________

• 15,000 kilometers

• 1 light-year

• 15 Astronomical Units

• 6,000 miles

Tags

NGSS.MS-ESS1-3

Which unit of measurement is used to measure distances within our solar system?

• inches

• kilometers

• miles

• Astronomical units

Why do we use light years and astronomical units to measure distances in space?

• Scientists want to sound smart.

• Hubble discovered these units and wanted to use them.

• Space is too small to use km, it wouldn't make sense.

• Space is too big, vast, enormous to use traditional units, like miles.

Tags

NGSS.MS-ESS1-3

Which of the following is CLOSEST to planet Earth:

• Jupiter

• Andromeda Galaxy

• Earth's moon

• the Sun

Tags

NGSS.MS-ESS1-3