Astronomy 3.1

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

Which of the following is CLOSEST to planet Earth:

• Jupiter

• Andromeda Galaxy

• Earth's moon

• the Sun

Light year is a unit of _?_.

• time

• distance

• brightness

• heat

Why create a new unit for distance?

• Kilometers or miles were too small.

• Kilometers or miles were too big.

• They could not agree whether to use kilometers or miles.

Which is a longer distance: a parsec or a light year

• parsec

• light-year

• They are equal distances. Parsec is Latin for light-year.

Tags

NGSS.MS-ESS1-3