Imagine this: you’re at a karaoke competition. You grab the microphone, belt out your favorite song, and the crowd goes wild! Everyone can hear your voice, thanks to your handy dandy microphone. But how exactly do these snazzy little machines work? We asked mechanical engineer and science educator Tiffani Teachey to help us find the answer.

Got a question that’s pitch perfect? Send it to us at, and we’ll find an answer that really ampsyou up!