Sound Waves

Front

What happens when a wave reflects?

Back

It bounces off the surface of a barrier.

Front

What are sound waves with frequencies higher than 20,000 Hz called?

Back

Ultrasound waves.

Front

What type of wave does sound travel as?

Back

Longitudinal wave.

Front

What is the term for the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source?

Back

Doppler effect.

Front

What does the term 'pitch' refer to in sound?

Back

How high or low a sound seems to a person.

Front

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

Back

Approximately 343 meters per second.

Front

What is the relationship between frequency and pitch?

Back

Higher frequency corresponds to a higher pitch.

Front

What is the phenomenon called when sound waves bend around obstacles?

Back

Diffraction.

Front

What is the term for the maximum displacement of points on a wave from its rest position?

Back

Amplitude.

Front

What is the range of human hearing in terms of frequency?

Back

Approximately 20 Hz to 20,000 Hz.