Claviro

Waves & Sound

Sound Propagation

Select Medium

1100

Infrasound <20Hz | Audible 20Hz-20kHz | Ultrasound >20kHz

About this concept

What to notice

Change the medium (air, water, solid) and observe how sound speed changes.

Why it matters

Sound speed depends on the properties of the medium. This explains why thunder is heard after lightning.

Think about

If you increase the density of the medium, what happens to sound speed? Try different materials.

Formula & Application

Key Formula

v = sqrt{ rac{B}{ ho}}

Use this formula to calculate the relationship between different variables in this concept.

Example

Sound travels at about 343 m/s in air, but about 1482 m/s in water.