Sound Waves

Front

What is the definition of amplitude in sound waves?

Back

Amplitude is the maximum displacement of points on a wave from its rest position, which determines the loudness of the sound.

Front

How does loudness relate to amplitude?

Back

Loudness (volume) is directly related to the amplitude of the sound wave; higher amplitude means louder sound.

Front

What is the unit of measurement for sound intensity?

Back

The unit of measurement for sound intensity is the decibel (dB).

Front

What does a decibel scale measure?

Back

The decibel scale measures the intensity of sound, with each increase of 10 dB representing a tenfold increase in intensity.

Front

What is the range of decibels considered 'loud'?

Back

A sound is considered 'loud' if it falls within the range of 80-90 dB.

Front

What is an echo in terms of sound waves?

Back

An echo is the reflection of sound waves off a surface, returning to the listener after a delay.

Front

What is the difference between compression and rarefaction in sound waves?

Back

Compression is the region in a sound wave where particles are close together, while rarefaction is where particles are spread apart.

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

What factors affect the speed of sound?

Back

The speed of sound is affected by the medium (solid, liquid, gas), temperature, and density of the medium.

Front

What is the relationship between frequency and pitch?

Back

Frequency is the number of waves that pass a point in one second, and it determines the pitch of the sound; higher frequency means higher pitch.