| During the low-pressure phase of each sound wave, bubbles expanded rapidly. |
| This is important because a long wavelength means that the sound wave can pass around barriers, like rocks, easily. |
| When the diaphragm vibrates under the action of a sound wave, the current in the circuit varies due to the varying capacitance of the condenser. |
| This phenomenon involves the bending of a sound wave owing to changes in the wave's speed. |
| The bubbles grow in size until they are collapsed rapidly by the compression region of the sound wave. |
| The transfer of energy among molecules creates a mechanical wave of energy called a sound wave, which propagates away from the source of the disturbance. |
