Chapter 24 Sound Quizziz

Multiple Choice

A low-frequency sound has a ______ pitch.

• A) High

• B) Low

• C) Medium

• D) Variable

Multiple Choice

Each person is saying 'Hello'. Which voice corresponds to the lowest frequency? (you may need to go back and look at the slide again)

• Voice A

• Voice B

• Voice C

• None

Multiple Choice

What is the unit used to measure the loudness of sound?

• Hertz

• Decibels

• Watts

• Lumens

Multiple Choice

Which of the following sound levels is equivalent to ordinary conversation 1 meter away?

• 30-40 dB

• 45-55 dB

• 65 dB

• 90 dB

Multiple Choice

Fill in the blank: Sound travels through most liquids and solids ______ than through air.

• slower

• faster

• at the same speed

Multiple Choice

Which material has the highest speed of sound according to the table?

• Air

• Water

• Steel

• Gold

Multiple Choice

In the diagram of a moving sound source, which observer hears the highest frequency?

• Observer A

• Observer B

• Observer C

• Observer D

Multiple Choice

Fill in the blank: The Doppler Effect occurs when a sound source is ______.

• stationary

• moving

• silent

• loud

Multiple Choice

In the context of the Doppler Effect, what happens to the wavelength of sound waves in front of a moving source?

• It increases

• It decreases

• It remains the same

• It disappears

Fill in the Blank

When the frequency of the source of sound increases, the wavelength ____________.

Draw

Circle the fundamental frequency in this picture.

Draw

Label 1 Node and 1 antinode in the picture.

Multiple Choice

How many ANTINODES are in this standing wave?

• 1

• 2

• 3

• 4

Multiple Choice

How many wavelengths are in this standing wave?

• 1

• 2

• 3

• 4

Multiple Choice

What is the relationship between wavelength and frequency in sound?

• Directly proportional

• Inversely proportional

• No relationship

• Both increase together.

Fill in the Blank

If the long pipe has a frequency of 528 Hz, what is the frequency of the short pipe?

Multiple Choice

Which of the following describes the bending of waves as they pass through a medium?

• Reflection

• Refraction

• Diffraction

• Absorption

Multiple Choice

In which phenomenon do waves spread out after passing through a narrow opening?

• Reflection

• Refraction

• Diffraction

• Absorption

Multiple Choice

Reflection occurs when waves ______ off a surface.

• bend

• spread

• bounce

• absorb

Multiple Choice

What is the term for the multiple echo created by reflected and direct sound from musicians?

• Reflection

• Reverberation

• Resonance

• Refraction