A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.
What is a light-year?
Distances in space are enormous - so big that our standard units of measurement, kilometres and miles, are just too small to be useful.
So scientists use something else - the light year.
But what is it and how does it work?
1 light-year is the distance traveled by light in one year.
Earth Compared To The Rest Of The Universe
What is a light-year?
Distances in space are enormous - so big that our standard units of measurement, kilometres and miles, are just too small to be useful.
So scientists use something else - the light year.
But what is it and how does it work?
1 light-year is the distance traveled by light in one year.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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