Sound

We talk by producing sound waves through our ____.

How long would sound take to travel through 2 m of rubber which has a speed of 60 m/s?

The unit of frequency is the

One hertz is one vibration per ___.

When the source of a sound is moving towards you, the pitch ___

A sound wave is a ____ wave.

As the frequency of a sound wave increases, its wavelength ____.

Sounds above 20,000 hertz are called ____.

The change in the sound of an aproaching siren is due to ___.

The pitch of a sound depends on its ___.

The three properties of sound are loudness, the Doppler effect and __.

Loudness is measured in ____.

Sound travels fastest in

Which property of sound describes your perception of the energy of a sound?

To find their way in the dark, bats use

You can hear sound around the corners because of ___.

Loudness depends on ____.

Sounds below 20 hertz are called ___.

Which term refers to how high or low a sound seems to a person?

Ms. G plays music at 30 dB;John plays Go-Go music playing at 70 dB. How much louder is John's?

Destructive interferences reduces the amplitude or the ___ of a sound.

The more dense a medium is the ____ the speed of sound.

Does sound travel faster in higher temperatures or lower temperatures?

A high-pitched sound has a

A sound wave consists of compressions and

The ability of a medium to bounce back after being disturbed is called ___.

Why did Chuck Yeager's team choose a high altitude to try to break the sound barrier?

The speed of sound in air is

Humans can hear sound with a frequency range of about 20 to about ___ hertz.

At what level can sound damage the ears?

The speed of sound depends on elasticity, temperature, and ____.

When your vocal cords are stretched they produce a _____ pitch.

A reflected sound wave is called ____.

The three groups of musical instruments are ___

The first person to break the sound barrier was ___.