Which phrases accurately describe a light-year? Check all that apply.

the shape of a galaxy

the distance that light travels in a year

9.46 trillion kilometers (5.88 trillion miles)

a yearly measurement of light given off by stars

the amount of time it takes light to travel 1 million kilometers

the distance that light travels in a year

9.46 trillion kilometers (5.88 trillion miles)

Explanation:

these are correct on edge

Light year is a unit of measurement of distance (for space objects like satellites, stars etc)

It is defined as the distance traveled by a light in one year

The speed of light is 3 X 10^8 m / s

So it travels 3 X 10^8 meters in one second

The seconds in one year = 365 X 24 X 60 X 60 seconds

So distance traveled by light in one year

= 3 X 10^8 X 365 X 24 X 60 X 60 seconds

= 9,460,000,000,000,000 meters.

= 9.46 trillion kilometers

So the correct answers are

the distance that light travels in a year

9.46 trillion kilometers (5.88 trillion miles)