Properties of Waves & Sound

Front

What is amplitude in a wave?

Back

Amplitude is the maximum displacement of points on a wave from its rest position. It determines the energy and loudness of the sound.

Front

What does wavelength represent in a wave?

Back

Wavelength is the distance between two consecutive points that are in phase on a wave, such as crest to crest or trough to trough.

Front

What is a longitudinal wave?

Back

A longitudinal wave is a type of wave where the particle displacement is parallel to the direction of wave propagation, characterized by compressions and rarefactions.

Front

What is compression in a longitudinal wave?

Back

Compression is the region in a longitudinal wave where particles are packed closely together, resulting in higher pressure.

Front

What is rarefaction in a longitudinal wave?

Back

Rarefaction is the region in a longitudinal wave where particles are spread apart, resulting in lower pressure.

Front

How does frequency relate to sound?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz). Higher frequency means a higher pitch of sound.

Front

What is the relationship between amplitude and loudness?

Back

Higher amplitude results in louder sounds, while lower amplitude results in softer sounds.

Front

What is the formula for wave speed?

Back

Wave speed (v) = frequency (f) × wavelength (λ).

Front

What is a crest in a wave?

Back

A crest is the highest point of a wave, representing the maximum displacement above the rest position.

Front

What is a trough in a wave?

Back

A trough is the lowest point of a wave, representing the maximum displacement below the rest position.