Vibrations and Wave Motion

Front

What happens to the pitch of a siren as an ambulance approaches you?

Back

The pitch increases.

Front

In what temperature do sound waves move faster?

Back

Sound waves move faster in higher temperatures.

Front

What type of wave is characterized by particle displacement parallel to wave direction?

Back

Longitudinal wave.

Front

What is the definition of wavelength?

Back

Wavelength is the distance between successive crests or troughs of a wave.

Front

What type of interference occurs when two waves combine to make a larger amplitude?

Back

Constructive interference.

Front

What type of interference occurs when two waves combine to make a smaller amplitude?

Back

Destructive interference.

Front

What is the formula for wave speed?

Back

Wave speed = frequency × wavelength.

Front

What is the relationship between frequency and wavelength in a wave?

Back

As frequency increases, wavelength decreases.

Front

What is a transverse wave?

Back

A wave where particle displacement is perpendicular to wave direction.

Front

What is the speed of sound in air at room temperature (20°C)?

Back

Approximately 343 meters per second.