Want to understand why it is that having a precise timepiece (also known as a chronometer) helps you determine your longitude? Play this Shockwave game, get lost on the high seas, and find out.

But I also need to find out how far around the Earth he is, and how far down. To do that, I’ll use what’s called latitude and longitude.Lines of latitude run around the Earth like imaginary ...

Explains the concepts of latitude and longitude, which are used to locate places on Earth. It describes how latitude is measured in degrees north or south of the equator and how longitude is measured ...