Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biophysics Lec > Sound Properties and Hearing > Flashcards

Sound Properties and Hearing Flashcards

1
Q

________ waves are partially transverse and partially longitudinal

A

Water or sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

__________ consist of cycles or patterns that are produced over and over again by the source; with simple harmonic motion

A

Periodic waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

________ is a vibration of molecules that goes back and forth kaya parang wave yung graph

A

Sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The _________ is the maximum excursion of a particle of the medium from the particle undisturbed position

A

amplitude A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The __________ is the horizontal length of one cycle of the wave

A

wavelength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The _________ is the time required for one complete cycle.

Time of one cycle, unit is sec.

A

period

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The _________ is related to the period and has units of Hz (Hertz), or s-1 .

_____ number of cycles per second

f = 1/T

A

frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

20 Hertz means that the vibration goes 20 times back and forth in one second..

High frequency = faster

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Bigger instrument = higher frequency or lower frequency?

A

lower frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

_______ travels through gases, liquids, and solids at considerably different speeds

A

Sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

__________ is each person’s subjective perception of a sound wave, which cannot be directly measured

A

Pitch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The __________ is the number of cycles per second.

A

frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Does higher frequency mean higher pitch or lower pitch?

A

higher pitch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When the sound is near you, the frequency tends to ________ and when it goes far from you, the frequency tends to _______

A

Compress; expand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the two types of waves?

_____ - perpendicular to the direction of the wave
_____ - parallel to the direction of the wave

A

Transversal wave

Longitudinal wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Higher frequency; short-wavelength; lots of waves; high sound

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Lower frequency; longer wavelength; few waves

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Sound waves are examples of the longitudinal or transverse waves?

A

longitudinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Does Individual air molecules are carried along with the wave??

A

No, because air molecules ay yung hininga na hindi naman nasasama sa wave

20
Q

A sound with a single frequency is called a _______

Ex: yung pag sasalita ng isang tao ay nde pure tone

A

pure tone

21
Q

The brain interprets the frequency in terms of the subjective quality called _________

A

pitch

22
Q

_________ is an attribute of a sound that depends primarily on the pressure amplitude of the wave

A

Loudness

23
Q

Change in pressure corresponds to _________

A

loudness

24
Q

Increase in amplitude = increase in ______

A

volume

25
Q

P-waves = longitudinal wave

S-wave = transverse wave

Different speed ng wave pag may Earthquake because of there are different materials ang Earth

Ex: speed of wave is faster in granite than in sediments

A
26
Q

Speed of Sound are affected by:

______________
______________

A

Density or material

temperature

27
Q

Does the speed of sound depend on frequency?

A

no ; only density and temperature affect the speed of sound

28
Q

low-frequency sounds must have a greater wavelength or lower wavelength?

A

Greater wavelength

29
Q

lower-frequency sounds are emitted by the large speaker, called a ________

A

woofer

30
Q

higher-frequency sounds are emitted by the small speaker, called a _________

A

tweeter

31
Q

PART 2: SOUND INTENSITY

A
32
Q

Sound waves carry energy that can be used to do work

The amount of energy transported per second is called the _______ of the wave

A

power

33
Q

The _________ is defined as the power that passes perpendicularly through a surface divided by the area of that surface.

A

sound intensity

34
Q

What is the threshold of hearing of humans? Or the SMALLEST SOUND INTENSITY that human can hear?

A

1000 Hz tone that corresponds to 1x10^-12W/m2

35
Q

continuous exposure to intensities greater than _______ can be painful

A

1W/m2

36
Q

The __________ is a measurement unit used when comparing two sound intensities

A

decibel (dB)

37
Q

The ________ is the change in frequency or pitch of the sound detected by an observer because the sound source and the observer have different velocities with respect to the medium of sound propagation

A

Doppler effect

38
Q

When the truck is at rest, the frequency is ________.

A

constant

39
Q

When the truck is moving towards you, frequency ________ and wavelength _________

A

increases ; compress

40
Q

When the truck is moving away from you, the frequency _______ and the wavelength _______

A

Decreases; expands

41
Q

What is the relationship between wavelength and frequency?

A

inversely related

42
Q

probe that are used in the removing of tumor

A

Cavitron Ultrasonic Surgical Aspirator (CUSA)

43
Q

measure the speed of the blood flow using transmitting and receiving elements and detect fetal heart

A

Doppler Flow meter

44
Q

you need specific intensity level (dB) is needed for you to be able to hear certain frequency of sounds

A

TRUE

45
Q

When the waves are same with each other and are said to be in exactly in phase

A

Constructive interference

46
Q

Where waves are said to be exactly out of phase

So if two waves add up, it will result to just flat wave

A

Destructive Interference

Biophysics Lec (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions