GPS: Never EVER Lost!

By a fourth grader

Intro

Have you ever been lost?  Imagine you are hiking or sailing and you suddenly realize, you don’t know where in the world you are!  Your heart begins to pound.  Your forehead begins to sweat.  Then you smile and pull out your handy GPS. My report will cover three interesting ideas. First, I will write about what GPS is and does. Next, I will cover the invention of the GPS. Finally, I will end with GPS satellites. If you have a problem with getting lost and you don’t know that there’s something in this world, that can solve that problem, then you definitely read this!

What GPS is and what GPS does

This paragraph is about what GPS is and what it does.

GPS is just like a map, except it is digital. It tells you exactly where you are. Marshall Brain said that a GPS receiver can help you find where you are, anywhere on earth, as long as you have a clear enough view of the sky. If your GPS receiver can get signals from 3 or more satellites, it can figure out where you are by doing some fancy math called trilateration.

 

The Invention of the GPS

This paragraph is about the invention of the GPS. 

GPS was invented so that people in the army would not get lost. GPS was invented in the 1970’s. Allison K. Brown said that in the early 1970's, the military began developing GPS. It became fully operational in 1995. (World Book Encyclopedia)

The GPS Satellites

This paragraph is about the GPS Satellites. GPS has 27 satellites but only uses 24 so that incase one goes out then they will have

three extra. Marshall Brain taught that, the Global Positioning System (GPS) is actually a constellation of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails).

(HowStuffWorks.com)

Conclusion

In conclusion, if you never want to be scared by getting lost, be sure to have a GPS.  I hope you enjoyed learning about GPS.  I know I enjoyed learning about what GPS is and what it does.  Always remember the invention of the GPS and the GPS satellites.  Thanks for reading this report!