How Does Earth Science -TIme Zones and Longitude Work?

Earth science helps us understand how time zones and longitude work, like having different times on a giant clock around the world.

Imagine Earth is like a big pizza that's spinning in space. As it spins, some parts of the pizza get sunlight first, and others get it later. That’s longitude, the lines that run from top to bottom on your map, like slices of pizza. The more east you go (the more slices you've eaten), the earlier the time is.

Time Zones Are Like Pizza Slices

The world is divided into time zones, which are like big pizza slices. Each slice has its own clock. When it’s noon in one slice, it might be 11 a. m. in the slice next to it, just like how your neighbor might finish their snack before you do.

There are about 24 time zones around Earth because Earth spins once every day, that's 24 hours! So each time zone is like a little piece of the spinning pizza, with its own special time.

If you travel east or west, it’s like moving to another slice on your giant pizza clock. You either add an hour (if you go east) or take one away (if you go west), just like changing the number on your favorite clock! Earth science helps us understand how time zones and longitude work, like having different times on a giant clock around the world.

Imagine Earth is like a big pizza that's spinning in space. As it spins, some parts of the pizza get sunlight first, and others get it later. That’s longitude, the lines that run from top to bottom on your map, like slices of pizza. The more east you go (the more slices you've eaten), the earlier the time is.

Take the quiz →

Examples

  1. A child learns that when it's noon in New York, it's midnight in Tokyo because the Earth is spinning.
  2. Imagine the Earth like a clock, each time zone is like an hour mark on the clock face.
  3. If you travel east from London to Paris, your watch will show a later time because you're moving with the Earth's rotation.

Ask a question

See also

Discussion

Recent activity