Light & Sound Waves
📋 What it is
Waves carry energy without carrying matter; light travels far faster than sound.
🗣️ Coach says
A wave moves ENERGY, not stuff — a ripple crosses a pond but the water stays put. Sound waves need a material (air, water) and move fairly slowly; light waves are much faster and can even cross empty space, which is how sunlight reaches Earth.
🧠 Memory hook
Waves move energy, not matter. Light beats sound in a race, every time.
😂 Giggle
What did the spring say after the experiment?
"I'm under so much pressure I might just bounce!"
😲 Whoa!
You see fireworks explode before you hear the bang — light reaches you almost instantly while sound lags behind.
✅ Quick check: Why do you see lightning before hearing thunder?
Say your answer out loud first — then reveal.
Light travels far faster than sound, so the flash arrives almost instantly while the sound takes longer.
Light’s speed vastly exceeds sound’s, so it reaches you first.
🧪 Try it! (2 minutes)
Watch a distant clap (a field, gym). You see it before you hear it — light beats sound.