Ever had one of those moments when a light bulb switches on in your head and you have an idea about how to solve something?

That's how some of the greatest inventions of all time started out. A spark of an idea, that grows into something much bigger.

Another thing that lots of ideas have in common is that they can be legally protected to prevent other people copying them without permission. Trademarks and patents are two of the most common ways to do this.

See how much you know about patents and trademarks, and some of the more unusual inventions, in this Legal Choices quiz.

Find out at the end if you're an Einstein in waiting, or if you really need to take an extra science class.

Good luck!