SOUND

Front

Why can't the sound of a ringing bell be heard when air is removed from a glass jar?

Back

The air in the jar provides a medium for the sound to travel through.

Front

The sound of an object has 120 vibrations per minute. What is the frequency and time period?

Back

2 Hz & 0.5 seconds

Front

Which of the following would you hear as a low pitched sound? Options: sound wave with a frequency of 50 Hz, sound wave with frequency of 10,000 Hz, sound wave with an intensity of 10 dB, sound wave with an intensity of 100 dB

Back

sound wave with a frequency of 50 Hz

Front

Ryan makes an instrument from a drinking straw. If he cuts the straw in half, what will happen to the pitch?

Back

increases

Front

Area of a longitudinal wave where particles are CLOSE together.

Back

Compression

Front

When a sound is louder, what measurement gets bigger?

Back

Amplitude

Front

What is B? Options: crest, trough, compression, rarefaction

Back

rarefaction

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?

Back

The distance represented by C would increase.

Front

A student holds two vibrating objects. Object A is vibrating faster than object B. Which statement is true?

Back

A will have a higher pitch than B

Front

How is sound produced by these instruments?

Back

vibrating columns of air