What's inside an Air Raid Siren?

Published on January 30, 2019
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Captions provided by CCTubes – Captioning the Internet! How does an air raid siren make such a loud noise without electricity? Make sure to watch Mark’s video of the World’s Largest Air Horn!: https://youtu.be/pFEB0chiuJA

Watch the Behind the Scenes of our Day with Mark! https://youtu.be/rJIc1iAQdPw

Mark’s channel here: https://www.youtube.com/user/onemeeeliondollars

What’s the loudest sound you’ve ever heard?

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