Beats are caused by __________________.

interference from two waves of almost the same frequency

Why do we hear 1 pitch from an instrument even though it vibrates at many frequencies?

It absorbs and amplifies energy at its natural frequency.

Why would you not want to use a sound wave with a wavelength of 30 cm (1 foot) for imaging?

that wavelength would diffract more than reflect

Sound quality describes ________________.

why notes of the same pitch and loudness sound different

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Sound, Chapter 10 Sections 3 and 4

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review for how instruments make music and applications of the reflection of sound.

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Questions 15

Answers

1
Beats are caused by __________________.
interference of two waves at the same frequency
diffraction of sounds around the edge of the instrument
reflection of sounds in the instrument
interference from two waves of almost the same frequency
2
Why do we hear 1 pitch from an instrument even though it vibrates at many frequencies?
It absorbs and amplifies energy at its natural frequency.
some vibrations interfere and cancel out
Some of the frequencies are naturally louder than others
Constructive interference amplifies 1 frequency the most
3
Which word does not describe music?
regular pattern
intentional
collection of sounds
random
4
Why would you not want to use a sound wave with a wavelength of 30 cm (1 foot) for imaging?
that wavelength would diffract and interfere with the waves
that wavelength would refract more than reflect
that wavelength would diffract more than reflect
that wavelength would only reflect
5
The pulsing sound that you sometimes hear when two instruments tune is called ____________.
tuning pulses
beats
interference tuning
pulses
6
Why do concert halls have carpet floors and drapes on the walls?
to reduce sound reflections
to amplify reverberations
to amplify sound reflections
to amplify sounds
7
Which choice is the best description of noise?
intentionally loud sounds
random patterns and pitches
intentionally random sounds
unpleasant to the ear
8
The study of sound is called ________________.
Sonography
Acoustics
Soundology
Ultrasound
9
Sound quality is caused by ____________________.
overtones
interference
reflection
beats
10
The vibration that determines the pitch of a musical note is called the _______________.
first overtone
lowest overtone
the determinate overtone
the fundamental
11
To locate a submarine underwater, a ship might use ____________.
Ultrasound imaging
Sonar
Acoustics
Echolocation
12
True or False: Instruments vibrate with more than one frequency when they play a single note.
True
False
13
Bats locate objects by emitting sounds and interpreting their reflections. This is called ____.
Sonar
Echolocation
Acoustics
Ultrasound
14
Which is not a use of ultrasound in medicine?
looking at a fetus
imaging body parts
cancer therapy
breaking up kidney stones
15
Sound quality describes ________________.
why notes of the same pitch and loudness sound different
how in tune a note is
variations between how two different notes sound
how good a music note sounds

Sound, Chapter 10 Sections 3 and 4 Flashcards | StudBud