Sound Travels

We had a presentor at school today to help us understand how sound travels.  He also demonstrated the effect pitch has on sound vibrations.  He used our recorded voices, a beat we created, and the unique noises a few of our students created for him.

The presentor also demonstrated a larger version of candles impacted by the sound waves as they traveled from his microphone and his keyboard to a small speaker.  As the sound waves traveled through the speaker they showed vibration by the way the flames rise and fall.  When sound waves get "bunched up"  the rise and fall of the flames resembles mountain peaks with valleys.