Review Distances in Space

A light year is the 

• distance that light travels in one year
• Speed at which light travels 
• Distance between the sun and the earth. 
• Distance at which light no longer exists. 

What is an astronomical unit (A.U.)?

• the time it takes light to travel one year

• the distance between the Earth and the Moon

• the distance between the Earth and the Sun

• the distance between the Earth and the Neptune

Tags

NGSS.MS-ESS1-3

What do we use astronomical units to measure?

• distances in our solar system
  
• How far our solar system is from others in our galaxy.
  
• The distances between galaxies. 
  
• The distance from one side of the universe to the other. 

Tags

NGSS.MS-ESS1-3

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 scenarios would be appropriate to use light years?

• From the sun to Earth

• from Earth to Neptune

• from the Milky Way to its closest galaxy

• Asteroid Belt to the Kuiper Belt

Tags

NGSS.MS-ESS1-3

Which of the following scenarios would we use Light Years to determine, not Astronomical Units (AU)?

• distance from Mercury to Saturn

• distance from Sun to Neptune

• distance from Earth to Sun

• distance from Asteroid Belt to the Betelgeuse Star

Tags

NGSS.MS-ESS1-3

This geometrically derived unit equals about 3.26 light years

• Astronomical Unit

• Light year

• Parsec

• Light second

_______________ would be the best unit to use to measure the distance between the asteroid belt and Pluto

• Astronomical units

• Light seconds

• Light years

• Parsecs

Tags

NGSS.MS-ESS1-3

_______________ would be the best unit to use to measure the distance between the our sun and Proxima Centauri (our nearest star neighbor).

• Astronomical units

• Light seconds

• Light years

Tags

NGSS.MS-ESS1-3

If an object is 7.4 light years away from Earth, what does this tell you?

• It would take 7.4 minutes for the light to get to Earth.

• Traveling at the speed of light it takes 7.4 yrs to get to the earth.

• The object is very close to Earth.

• It would take 7.4 seconds for the light to get to earth.