1) Waves and Sound Review

Front

What happens to the observed frequency of a sound when the source is moving away from the observer?

Back

The observed frequency decreases.

Front

How do you calculate the wavelength of a sound wave?

Back

Wavelength = Speed of sound / Frequency.

Front

What is the wavelength of a sound wave traveling at 340 m/s with a frequency of 1700 Hz?

Back

0.2 meters.

Front

What is the speed of a wave with a frequency of 50 Hz and a wavelength of 2 meters?

Back

100 m/s.

Front

Describe the relationship between amplitude and loudness of a sound wave.

Back

The amplitude of a sound wave is directly proportional to its loudness.

Front

What type of wave is a sound wave?

Back

Mechanical wave.

Front

Define frequency in the context of sound waves.

Back

Frequency is the number of cycles of a wave that occur in one second, measured in Hertz (Hz).

Front

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

Back

Approximately 340 m/s.

Front

What is the formula for wave speed?

Back

Wave speed = Frequency x Wavelength.

Front

What effect does increasing the frequency of a sound wave have on its wavelength?

Back

Increasing frequency decreases wavelength.