Science Snack Sound isnt just something we hear its something we feel as vibration., This Air Toobz demo shows how moving air creates vibrations and those vibrations are what we recognize as Murdoch's Silver Star US Army Vibrating and Sound Long Special Ops Machine Gun Toy Automatic Moving Dog Toy Ball, USB Rechargeable Interactive Pet Toy with Vibrating & Bouncing Motion, LED Lights, Durable TPR Material, Squeaky Sound, for Small, Medium & Large Dogs, Blue Walmart.com Dynamic Defender Vibrating Sound Toy Gun for Kids Realistic Playtime Fun Lazada PH Dynamic Defender Vibrating Sound Toy Gun for Kids Realistic Playtime Fun Lazada PH Battery Powered Toy Gun for Kids with Sound, Light and Vibration