Wanna know your speed? Whether it’s helping us forecast the weather or telling us the speed of a major-league fastball, radar is a pretty useful device! In this BrainPOP movie, Tim and Moby explain exactly how it works! You’ll learn about the four main parts of a radar system, and how they all work together to find out location, speed, and direction. You’ll also find out the difference between pulse radar and old-fashioned continuous-wave radar, as well as what, exactly, the Doppler shift is. Move into the fast lane and click on this movie to learn more!