Search HowStuffWorks and the web:
 

Geophysics is the study of the forces that shape the Earth from a global perspective. Learn about gravity, plate tectonics and other topics.

How Maps Work

Forward this article to five of your friends.

Your Name:

Your E-mail:

Friend #1 E-mail:

Friend #2 E-mail:

Friend #3 E-mail:

Friend #4 E-mail:

Friend #5 E-mail:

Your Message:



Please enter the characters you see above:
This helps HowStuffWorks prevent automated emails.

ADVERTISEMENT
Browse Browse Videos Browse Videos
 
  •  
    VIDEO SELECTIONS
     
Reuters
World Record Swimming Pool

 
MediaLink
OnStar, Mapquest Partner to Help Drivers

 
MediaLink
In-Car Navigation from MapQuest, OnStar

 
Neo-Fight.tv
Technology Review: Handheld GPS

 
MediaLink
OnStar Helps Find Missing Children

 
PodTech Networks
How Google Outreach Works

 
Reuters
The Running of the Reindeer

 
MediaLink
OnStar Turn-by-Turn Explained

 
HSW
Sketches of the World: Madagascar

 
 
  •  
    TOP SELLING
    SOFTWARE
NAVIGON FreshMaps Roads reconfigure. Restaurants open and close. Keep your GPS accurate and up-to-date over the long haul with NAVIGON FreshMaps, prov...
$79.99

Prepare to hit the trail using the feature-packed suite of software tools exclusive to National Geographic National Park Maps. Get the most out of yo...
$14.95

3COM WLS LAN CNTRL WX4400 LIC UPG
$1800.00