Waves

Water, a more efficient medium that air for sound, is ____ times faster and propagates much farther.

A region of higher pressure is known as a(n) _____________.

Between the compression waves and areas of low pressure are called ___________.

The leading edge of the compression wave is known as the __________.

Rarefaction phase is referred to as a ______.

The measurement of intensity of the sound wave due to variations in pressure is called __________.

Frequencies that are below 20 Hz are referred to as _________.

Frequencies that are above 20 kHz are called __________.

Sound pressure is converted from _________ to decibels.

Source level is the sound pressure measured _______ from the source.