Sound Waves

Front

What travels through solids fastest because the molecules are closer together?

Back

speed of sound

Front

How high or low a sound is; depends on the frequency (greater frequency= higher pitch)

Back

pitch

Front

When the sound source moves, the frequency changes
ex. police car siren sounding lower pitch after the car passes

Back

Doppler Effect

Front

A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves

Back

longitudinal wave

Front

A reflected sound wave

Back

echo

Front

High Amplitude =

Back

Louder sounds

Front

Low Amplitude =

Back

Quieter Sounds

Front

Low frequency = _______ Pitch

Back

Low

Front

High frequency = _______ Pitch

Back

High

Front

After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above? Options: The distance represented by C would increase, The distance represented by C would decrease, The distance represented by D would increase, The distance represented by D would decrease.

Back

The distance represented by C would increase.