Sound

Front

Hearing your brother's music playing from down the hall is an example of what type of wave interaction? Options: reflection, interference, refraction, diffraction

Back

diffraction

Front

What causes the echo when you notice your voices and footsteps echoing in a big, empty house?

Back

sound waves reflecting off smooth, flat surfaces throughout the house

Front

If distance C on the diagram increased, what would happen to the pitch? Options: The pitch would be louder., The pitch would be softer., The pitch would be higher., The pitch would be lower.

Back

The pitch would be lower.

Front

If the distance represented by the letter A were increased, how would it change the way the sound was heard? Options: The sound would be higher, The sound would be lower, The sound would be softer, The sound would be louder

Back

The sound would be louder

Front

What is how high or low a sound is; depends on the frequency?

Back

pitch

Front

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

Back

longitudinal wave

Front

A soft, low pitch sound would have which of the following?

Back

low frequency
low amplitude 

Front

How does Wave A (green wave) differ from Wave B (black wave)?

Back

Wave A and B have the same amplitude, but wave B (black) has a lower pitch.

Front

A reflected sound wave is known as a/an ___________.

Back

echo

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.