1. The difference between sound and light They’re both waves, after all

2. Speed Sound slow : about 330 m/s in air Light fast : about 300,000,000 m/s in air

3. Spectrum You hear most of the vibrations that are out there. You see only a small fraction of the electromagnetic waves present

4. Medium Sound waves travel in something Light can travel in a vacuum Different frequencies of light can travel right through dense materials (x-ray through bone)

5. Sound waves & Light waves Reflect Refract Diffract Interfere

6. Light is tied into the time and space in the Universe in a way that requires Einstein & Relativity to understand Because, no matter what the speed of light is in a vacuum or a material, nothing can go faster. Nothing. NOTHING.