9e: Wave behavior and the Doppler Effect

Front

What is destructive interference?

Back

Destructive interference occurs when two waves meet and cancel each other out, resulting in a smaller amplitude or no wave at all.

Front

What is constructive interference?

Back

Constructive interference occurs when two waves meet and combine to form a wave with a larger amplitude.

Front

Which type of wave travels faster through the air: sound or light?

Back

Light travels faster than sound through the air.

Front

What happens to the pitch of a siren as a police car moves away from you?

Back

The pitch of the siren decreases as the police car moves away due to the Doppler Effect.

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What is the relationship between wavelength and pitch in sound waves?

Back

Long wavelengths in sound correspond to low pitches, while short wavelengths correspond to high pitches.

Front

What is reflection in wave behavior?

Back

Reflection is the bouncing back of a wave when it hits a barrier.

Front

What is refraction in wave behavior?

Back

Refraction is the bending of waves as they pass from one medium to another due to a change in speed.

Front

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

Back

The speed of sound in air at room temperature 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.