Waves & Sound
Select Medium
Infrasound <20Hz | Audible 20Hz-20kHz | Ultrasound >20kHz
Change the medium (air, water, solid) and observe how sound speed changes.
Sound speed depends on the properties of the medium. This explains why thunder is heard after lightning.
If you increase the density of the medium, what happens to sound speed? Try different materials.
v = sqrt{rac{B}{ ho}}
Use this formula to calculate the relationship between different variables in this concept.
Sound travels at about 343 m/s in air, but about 1482 m/s in water.