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Honors Physical Science > Waves and Sound Vocab > Flashcards

Waves and Sound Vocab Flashcards

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1
Q

Waves are…

A

any disturbance that transfers energy through matter or space

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2
Q

A medium is…

A

a material through which waves can travel.

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3
Q

Waves that need a medium to travel are called

A

mechanical waves.

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4
Q

Transverse waves move…

A

up and down.

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5
Q

Points on a transverse wave are called

A

crests (the highest point) trough (the lowest point)

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6
Q

Longitudinal waves

A

move side to side and go back a back and forth motion

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7
Q

Points on a longitudinal waves are called

A

compressions and rarefractions

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8
Q

The relationship between frequency and wavelength are…

A

more frequency equals a decrease in wavelength

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9
Q

The relationship between frequency and energy are…

A

more frequency = more energy (tighter wave means more energy and more frequency)

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10
Q

The relationship between wavelength and energy is…

A

Shorter wavelength equals higher energy.

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11
Q

Electromagnetic waves…

A

do not need a medium to transfer energy.

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12
Q

Types of electromagnetic waves are…
RVMUXIWG

A

Radio Waves, Visible Light, Microwaves, Ultra violet light, X-rays, Infered Waves and Gamma rays.

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13
Q

The wavelength is the distance between

A

crest to crest or trough to trough

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14
Q

The weakest wave is…

A

a radio wave

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15
Q

The strongest waves are…

A

gamma waves

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16
Q

The distance between the peak of a wave and the midpoint is considered the…

A

amplitude

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17
Q

The number of cycles that pass in a certain time period considered the

A

frequency

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18
Q

The wave period is the…

A

time it takes for a certain number of cycles to pass.

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19
Q

Reflection is when…

A

a wave bounces back after striking a barrier.

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20
Q

Refraction is the…

A

bending of a wave as it changes directions

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21
Q

Diffraction is the…

A

bending of waves to pass a barrier or opening.

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22
Q

When two waves overlap it is called…

A

contsructive

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23
Q

Constructive waves increase…

A

amplitude

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24
Q

Destructive waves occur when…

A

two different crests in two different waves overlap

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25
Q

Destructive waves result in…

A

a decrease in amplitude

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26
Q

Standing waves occur when…

A

two waves collide and become uniform.

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27
Q

The frequency at which standing waves are produces is called

A

resonence

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28
Q

Sound is a

A

mechanical wave

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29
Q

High frequency=

A

high pitch

30
Q

Low frequency =

A

low pitch

31
Q

Frequency is measured in

A

hertz

32
Q

intensity is measured in

A

decibels

33
Q

The doppler effect is…

A

an increase (or decrease) in the frequency of sound, light, or other waves

34
Q

Sound is a…

A

wave

35
Q

Frequency determines…

A

pitch

36
Q

Intensity determines…

A

loudness

37
Q

Sound has many…

A

uses

38
Q

Sound waves…

A

vibrate particles

39
Q

Sound waves cannot

A

travel through a vacuum

40
Q

Sound waves are what type of wave?

A

longitudinal waves

41
Q

Sound travels at different speeds describe the different speeds through which sound travels.

A

Sound travels the slowest through gases, faster through liquids and the fastest through solids.

42
Q

A normal human can hear between —- and —– hertz

A

20-20,000

43
Q

Intensity is measured in…

A

decibels

44
Q

Music is a mixture of…

A

sound waves

45
Q

The doppler effect is when…

A

an apparent upward shift in frequency occurs when the source is approaching (the closer you get, the louder the noise)

46
Q

Sound is used in…

A

SONAR, ultra sound, echolocation, music and recording

47
Q

The formula for the velocity of a wave is…

A

wavelength times frequency

48
Q

The formula for the frequency of a wave is…

A

velocity/wavelength

49
Q

The formula for the wavelength of a wave is…

A

velocity/frequency

50
Q

P waves travel through…

A

liquids solids and gases

51
Q

S waves travel through…

A

only solids

52
Q

A surface wave is a wave that…

A

travels along or parallel to the earth’s surface.

53
Q

The interference of waves occurs when…

A

two waves meet when traveling on the same medium.

54
Q

Resonance is…

A

an object has a natural frequency receives a forced vibration at he same frequency

55
Q

Seismographs are used to…

A

record the motion of the ground during an earthquake.

56
Q

The two types of light are…

A

natural and artificial.

57
Q

The moon and stars DON’T reflect light towards the sun they…

A

receive light from the sun and reflect the waves onto the earth at night.

58
Q

Sound waves cause the air to…

A

compress and expand

59
Q

Light travels in…

A

a straight line.

60
Q

Light travels faster than…

A

sound

61
Q

We see objects because they…

A

reflect into our eyes

62
Q

Louminous objects…

A

produce light

63
Q

Non louminous objects…

A

reflect light

64
Q

Light gets reflected at the same…

A

angle it hits.

65
Q

Shiny smooth surfaces have a —– reflection (think about a mirror)

A

clear

66
Q

Rough surfaces have a —– reflection

A

diffused (light scatters in different directions

67
Q

Rarefraction occurs when…

A

waves speed up or slow down. EX: light waves are disturbed by water causing the waves to bend and appear odd. (bending of a wave)

68
Q

The color reflected from an object depends on the objects…

A

color

69
Q

black absorbs…

A

all light waves (all visible color)

70
Q

How is the triangle organized for the formulas for frequency, velocity and wavelength?

A

velocity on the top frequency on the left and wavelength on the right.

Honors Physical Science (9 decks)

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