Sound Waves Flashcard

Front

What determines the pitch of a sound wave?

Back

The frequency of the sound wave determines its pitch. Higher frequency results in a higher pitch, while lower frequency results in a lower pitch.

Front

What is the medium required for sound to travel?

Back

Sound requires a medium such as air, water, or solid materials to travel through, as it cannot travel through a vacuum.

Front

What is the relationship between amplitude and loudness?

Back

The amplitude of a sound wave determines its loudness. Greater amplitude results in a louder sound, while smaller amplitude results in a softer sound.

Front

True or False: Sound waves can travel through a vacuum.

Back

False. Sound waves need a medium to travel and cannot propagate through a vacuum.

Front

What is the source of sound waves?

Back

The source of sound waves is vibration. When an object vibrates, it creates sound waves that travel through a medium.

Front

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

Back

The speed of sound in air at room temperature (20°C) is approximately 343 meters per second.

Front

How does temperature affect the speed of sound?

Back

The speed of sound increases with an increase in temperature. Warmer air allows sound waves to travel faster.

Front

What is the difference between longitudinal and transverse waves?

Back

Longitudinal waves have particle movement parallel to the direction of wave propagation, while transverse waves have particle movement perpendicular to the direction of wave propagation.

Front

What is frequency measured in?

Back

Frequency is measured in Hertz (Hz), which represents the number of cycles per second.

Front

What is the range of human hearing?

Back

The range of human hearing is typically from 20 Hz to 20,000 Hz (20 kHz). Sounds outside this range are inaudible to humans.