Table of Contents
How do you calculate distance in a light-year?
Calculations involving light years and distance – Higher
- A light year is a distance.
- It is the distance light travels in one year.
- As light travels at constant speed, the distance light travels in a year can be calculated using the equation:
- Distance = speed x time.
- time = 1 year = 365 x 24 x 60 x 60 = 31,536,000 s.
How long is a light-year in km for Kids?
A light year (symbol: ly) is the distance that light travels in empty space in one year. Since the speed of light is about 300,000 km per second (about 186,000 miles per second), then a light year is about 10 trillion kilometers (about 6 trillion miles).
How do you explain light years to kids?
A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
How many kilometers are in a light year?
A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. Therefore a light year is exactly 9,460,730,472,580.8 kilometers.
Which is farther a light second or a light year?
In other words, a light-second is the distance light travels in one second, or 7.5 times the distance around Earth’s equator. A light-year is the distance light travels in one year. How far is that?
Which is longer a metre or a light year?
The SI base unit for length is the metre. 1 metre is equal to 1.0570008340246E-16 light years, or 0.001 kilometers. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light years and kilometres. Type in your own numbers in the form to convert the units! Want other units?
How much does light travel in one year?
A light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles).