•what is the doppler effect? how can the doppler effect be useful for a forensic investigation involving a shooting? • if you found a firearm at a crime scene, what steps would you take in order to transport the weapon to the lab? this is for my forensic science class.

 The Doppler Effect is when sound waves become stretched behind a moving object. This is applicable in ambulances in which frequencies matter with distance from the person hearing. This is useful for a forensic investigation involving a shooting because witnesses can Identify a firearm by the sound it makes.