How Does GPS Work?

By Leon Gray

Book Overview

When taking a road trip today, some sort of GPS device is essential. It may be built into the car's dashboard, or perhaps it's just an app on a smartphone. But GPS is used for more than just finding your way! Readers will be fascinated by its beginnings as a military system and its many modern uses, such as catching criminals, predicting earthquakes, and creating maps. Colorful photographs illustrate real-life examples of GPS technology, military and civilian, and informative text clearly explains the science and math concepts behind the satellites and receivers used all over the world.

• Format: Library Binding
• Language: English
• ISBN: 1482403935
• ISBN13: 9781482403930
• Release Date: December 2013
• Publisher: Gareth Stevens Publishing
• Length: 48 Pages
• Weight: 0.75 lbs.
• Dimensions: 0.4" x 8.6" x 11.0"
• Age Range: 9 to 11 years
• Grade Range: Grades 4 to 6