WONDER #1558: How Do Police Know How Fast You’re Going?
Question 1 of 3
What does radar stand for?
- Radio Detection and Ranging
- Really Awesome Detector for Auto Racing
- Racing Autos Detected and Ranged
- Radical Auto Detection and Registration
Question 2 of 3
Lidar machines use what modern technology?
- light bulbs
- nuclear fission
- solar power
Question 3 of 3
Radar guns detect speed by making calculations based upon what scientific principle?
- gravity field
- Doppler shift
Check your answers online at https://www.wonderopolis.org/wonder/how-do-police-know-how-fast-youre-going.