GPS: Never EVER Lost!

By a Fourth Grader

Intro

How would you like to receive a signal from a real, live satellite?  With a GPS receiver, you can!  My report will cover three interesting ideas.  First, I will write about what GPS is and what GPS does.  Next, I will cover the invention of the GPS.  Finally, I will end with the GPS Satellites.  If you think this was interesting, you must read on, cause it gets even better.

What GPS is and what GPS does

Topic Sentence:  This paragraph is about what GPS is and what GPS does.  GPS is a handy little tool.  Some are as small as a cell phone.  They need 3 “visible” satellites in order to work.  It can tell you where you are on Earth.  They are pretty cool.  They can also tell you how high up you are or how low you are.

 Marshall Brain said that

A GPS receiver can help you find where you are, anywhere on Earth, as long as there is 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 fully operational in 1995.  They started making GPS in the early 1970’s.  It was a very important new invention.  It was invented so the soldiers would not get lost and start shooting their own men.

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.  There are 27 GPS Satellites orbiting the Earth.  Three of the Satellites are only in case of emergency though. The Satellites weigh from 3,000-4,000 lbs.

Digital Graphic Research Corporation taught that,

“A GPS can get lost if it can't hear the tunes. Radio waves travel in straight lines, and they don't pass through metal or rock easily. So in a tunnel, or downtown surrounded by tall buildings, or even under heavy tree cover, a GPS can lose its position.”

(www.dgrc.com)

 

Conclusion

Are you still scared that you’re going to get lost?  Just get a GPS!  I hope you enjoyed learning about GPS.  I know I enjoyed learning about what GPS is and what GPS does.  Always remember the invention of the GPS and the GPS Satellites.

Thanks ten million bucks for reading my report!