How does GPS work?

In this episode, find out how GPS works and how it can help you satisfy a late night pizza craving!

Comprehension Questions:
1. What does GPS stand for?
2. Your phone can determine where you are by listening to signals from _________ in the sky.
3. True or False: Any device with GPS is programmed to know where all the GPS satellites are at any given time.
4. How does a phone compute its location?

Answer Key:
1. Global Positioning System
2. Satellites
3. True
4. Potential answer: By identifying how far the satellites are and figuring out the amount of time it took for the signal to reach the satellite.