Sound comes from vibration

1. When Ana hits a drum, what makes the sound?

   • The air moving
   • The skin shaking (right)
   • The hands hitting

2. Eli wonders: What causes the sound when a teacher taps a big bell?

   • The room gets cold
   • The bell breaks
   • Bell metal shakes (right)

3. Amara wonders: Why does a drum make noise when you tap it?

   • The skin moves quickly (right)
   • The drum gets bigger
   • The sticks get wet

Tip: Sound comes from vibrations — when an object shakes or moves quickly, it makes sound waves that travel through air.