Keywords latitude, longitude, Earth, Prime Meridian, time zones, International Date Line, geography, location, measurement Email us at [email protected] if you have questions about the footage ...

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.

To do that, I’ll use what’s called latitude and longitude.Lines of latitude run around the Earth like imaginary hoops and have numbers to show how many degrees north or south they are from the ...