Light Years

Which distance is larger: 1 astronomical unit or 1 light-year?

• 1 AU

• 1 LY

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 or kilometres.

Distance of Jupiter is 7.78 x 10⁸ km from the Sun.

Calculate its distance in ly.

• 8.19 x 10^-5 ly

• 5.19 x 10^-4 ly

• 5.19 ly

• 8.19 ly

A light year is approximately.....

• 59,987,812 kilometers

• 8,522,846,507 kilometers

• 9,460,730,472,581 kilometres

• 377,160,825,209,412,592 kilometers

Which unit of measure would be used to measure the distance from our solar system to the center of the MIlky Way?

• ft

• ly

• AU

• km

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

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

One light year is equal to:

• 12 million million kilometres

• 9.5 million million kilometres

• 5.5 million million kilometres

• 9 million kilometres

Proxima Centauri is ______ light years away.

• 6.8

• 2.5

• 4.3

• 5.4

What is a light year?

• A unit of time

• A unit of distance

• A unit of speed

• A unit of energy

Tags

NGSS.MS-ESS1-3