When Vibrations Become Sound
by Anonymous · ⭐ 1 · 🍴 0
〰️ What happens when we halve a wavelength? The number of vibrations doubles! At the same speed, «length» and «frequency» move in opposite directions. Watch the curve become more tightly packed before your eyes. 🔊 When you hear the wave, frequency becomes «pitch» and amplitude becomes «volume». Yet some sounds with the same pitch and volume still sound different. Find out why a piano and violin play the same note differently—listen for yourself. 🏃 Finally, discover what carries sound. Ring a bell in a vacuum and you hear nothing. Sound travels fourteen times faster through steel than through air—that’s why a train can be heard sooner with your ear on the rail. This app was made with code too · Shall we remix it and add an echo?
About this app
A hands-on middle school science app that explores how waves, sound, and materials are connected. Adjust amplitude and wavelength to see how frequency changes at a fixed speed, then hear how frequency, amplitude, and wave shape become pitch, loudness, and timbre. A third section compares sound in a vacuum, air, water, and iron, including the effect of air temperature on speed.
Use cases
- Middle school students learning wave and sound physics
- Teachers demonstrating wavelength, frequency, and amplitude
- Learners exploring pitch, loudness, and timbre through interactive sound
- Classroom activities about sound speed in different media
Features
- Interactive wave builder with amplitude and wavelength controls
- Visual readouts for wavelength, frequency, and amplitude
- Sound controls for frequency, loudness, and waveform shape
- Audio comparisons showing pitch, loudness, and timbre
- Medium selector for vacuum, air, water, and iron
- Mission-based challenges with reset and next controls