Sound Waves Flashcard Review

Front

How do echoes occur?

Back

Sound waves bounce back.

Front

What phenomenon describes the change in frequency of a train's whistle as it approaches and then passes you?

Back

The Doppler effect.

Front

What phenomenon allows sound waves to spread out after passing through a narrow opening?

Back

Diffraction.

Front

What type of wave is sound that requires a medium to travel?

Back

Longitudinal wave.

Front

What term refers to the perceived frequency of a sound?

Back

Pitch.

Front

What is the definition of sound waves?

Back

Vibrations that travel through a medium (solid, liquid, or gas) and can be heard when they reach a person's or animal's ear.

Front

What is resonance in the context of sound?

Back

The amplification of sound that occurs when the frequency of a force applied to a system matches the natural frequency of the system.

Front

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

Back

Approximately 343 meters per second.

Front

What is the difference between loudness and intensity?

Back

Loudness is the perceived strength of a sound, while intensity is the power per unit area carried by a sound wave.

Front

What is reflection in terms of sound waves?

Back

The bouncing back of sound waves when they hit a surface.