1
Vibration makes sound
Drums, bells, voice — all vibrate to make sound.
🥁 🔔 🗣️
Sound
📖 Study · Sound in Our Environment
Sound in Our Environment
Sound is made by vibration. We hear with our ears.
🎯 What you'll learn
- ✓Sound = vibration
- ✓Loud vs quiet sounds
2
Loud and quiet
Loud: shouting, sirens. Quiet: whispers, ticking.
📢 vs 🤫
3
Volume
Loud or quiet — that's volume. We can change how loud we speak.
🔊 vs 🔇
4
Pitch
High notes and low notes. Mice squeak (high). Drums boom (low).
🐭 high · 🥁 low
5
Protect your ears
Very loud sounds can damage hearing. Cover ears at sirens.
🚨 → 🤲👂
6
Echo
When sound bounces back, that's an echo. Try shouting in a tunnel!
🗣️ → walls → 🗣️