Good For 1

What are GPS receivers good for?

Go to the following website: Howstuffworks "How GPS Receivers Work" and read about the technology behind GPS receivers. This site will help you understand how this amazing technology works, and will even teach you what 3-D trilateration means. You might also learn that how you locate something is not as simple as it might seem at first thought.

Let's see how"good" you are.

After you read the article, answer the following questions:

Question 1: Explain how satellites could use 3-D
                  trilateration to locate you. Please use your own
                  words to describe your answer.

Question 2: Now, illustrate your answer to question 1 by
                  using pictures. Please add comments where
                  necessary.