A light year is the 

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

Tags

NGSS.HS-PS4-3

What is a galaxy?

• A large storm of comets. 
• A parallel universe that existed before the Big Bang. 
• A collection of stars, dust, and gas bound together by gravity 
• Unknown 

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.

What is the name or our spiral galaxy?

• Andromeda
• Milky Way
• Virgo
• Triangulum

The theory that the earth is the center of the universe

• heliocentric

• geocentric

• big bang

• big crunch

Tags

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Which two scientists supported the Big Bang Theory

• Lemaitre and Galileo

• Galileo and Copernicus

• Lemaitre and Hubble

• Aristotle and Ptolemy

Tags

NGSS.HS-ESS1-2

Name this model of the solar system

• Big Bang Theory

• The Big Crunch

• Heliocentric Theory

• Geocentric Theory

Tags

NGSS.MS-ESS1-1

What is the name of the galaxy we live in?

• The Milky Way

• Orion's Arm

• The Snickers

• Heliocentric

What is the name for this model of our Solar System?

• Geocentric

• Heliocentric

• The Big Bang

• The Big Crunch

Tags

NGSS.HS-ESS1-4

Which two scientists supported the Geocentric Theory?

• Aristotle and Ptolemy

• Aristotle and Hubble

• Copernicus and Galileo

• Galileo and Hubble