Distance

Light year is a unit of _?_.

• time

• distance

• brightness

• heat

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

What does the slope of a distance-time graph represent?

• Acceleration

• Velocity

• Time

• Distance

What is the formula for calculating distance when speed and time are known?

• Distance = Speed / Time

• Distance = Time / Speed

• Distance = Speed + Time

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.

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

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

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.

Tags

NGSS.MS-ESS1-3