Sound 4

Front

What is the range of frequencies audible to the human ear?

Back

20 Hz - 20,000 Hz

Front

Sound that is reflected is called an ___________.

Back

echo

Front

Why do the waves have a higher pitch?

Back

There are more waves.

Front

What causes sound?

Back

Vibrations.

Front

What happens to the wave as it moves from left to right?

Back

The wave is getting a louder sound.

Front

What is the term for the distance between two consecutive peaks of a wave?

Back

Wavelength.

Front

What unit is used to measure the loudness of sound?

Back

Decibel (dB).

Front

What is the term for the speed of sound in air at room temperature?

Back

Approximately 343 meters per second.

Front

What is an example of a sound that has a low frequency?

Back

A bass drum.

Front

What is an example of a sound that has a high frequency?

Back

A whistle.