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Physics > Chapter 15-16 test > Flashcards

Chapter 15-16 test Flashcards

1
Q

As the wavelength of light waves decreases, frequency in

A

increases.

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2
Q

The ____ says that the angle of incidence is equal to the angle of reflection

A

law of reflection

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3
Q

A prism separates white light into colors because the different wavelengths of the different colors causes them to

A

bend differently

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4
Q

a mirage of water in the road, or a broken straw in a glass of water are caused by what process

A

refraction

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5
Q

light can be characterized in two ways

A

wave like and particle like

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6
Q

a lens that causes light to spread out or diverge is

A

concave

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7
Q

the lens that can fix farsighted vision is

A

converging lens

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8
Q

when all subtractive pigment colors are mixed, you get

A

black

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9
Q

what radiation is felt as heat

A

infrared

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10
Q

the largest wavelengths in the electromagnetic spectrum belong to

A

radio waves

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11
Q

high powered radio waves that can be used for communication or cooking would be

A

microwaves

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12
Q

electromagnetic waves that have slightly higher frequency than visible light would be

A

ultraviolet

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13
Q

what rays have the highest frequency of all electromagnetic waves

A

gamma rays

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14
Q

the increase of an objects apparent size

A

magnification

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15
Q

two or more plane surfaces of a transparent solid at an angle to each other

A

prism

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16
Q

a lens that bends light waves inwards

A

convergent lens

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17
Q

the bending of light when crossing mediums

A

refraction

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18
Q

a lens refracting light waves to bend outwards

A

divergent lens

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19
Q

sound waves from a radio generally travel in which medium

A

air

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20
Q

if a transverse wave is moving from right to left, the individual particles in the medium are moving..

A

up and down

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21
Q

waves are often caused by

A

vibrating objects

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22
Q

the ___of a longitudinal wave radiates outward from its source, while the particles vibrate back and forth about their original positions.

A

wave front

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23
Q

a wave in which particle motion is perpendicular to wave motion

A

transverse wave

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24
Q

a term that refers to the high point of a wave

A

crest

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25
Q

a disturbance at the boundary between two media

A

surface wave

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26
Q

a wave that requires a medium in which to travel

A

mechanical wave

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27
Q

a wave in which particle motion is parallel to wave motion

A

longitudinal wave

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28
Q

a wave that consists of oscillating electromagnetic fields, radiating outward at the speed of light.

A

electromagnetic wave

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29
Q

a disturbance that carries energy through matter or space

A

wave

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30
Q

the matter through which a wave travels

A

medium

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31
Q

waves that need a medium in order to travel

A

mechanical waves

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32
Q

all waves except electromagnetic are

A

mechanical

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33
Q

waves that consist of changing electric and magnetic fields in space

A

electromagnetic waves

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34
Q

electromagnetic waves do not require a _______, they can travel through empty space

A

medium

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35
Q

types of electromagnetic waves are

A

visible light and microwaves

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36
Q

electromagnetic waves are

A

transverse

37
Q

sound waves are

A

longitudinal

38
Q

these waves happen between two different mediums. they are a combination of transverse and longitudinal

A

surface waves (water)

39
Q

the greatest distance of particles displaced from their normal position

A

amplitude

40
Q

more energy =

A

larger amplitude

41
Q

the distance between two crests or troughs

A

wavelength

42
Q

the time for one complete vibration to occur

A

period -measured in seconds

43
Q

the number of complete waves in a unit of time

A

frequency. measured in hz

44
Q

1 hz =

A

1 wave per second

45
Q

equations for wave speed

A

wave speed = wavelength/period
or
frequency X wavelength

46
Q

frequency and wavelength are

A

inversely related

47
Q

wave speed depends on

A

the medium

48
Q

sounds travel through air, water, and steel how fast

A

air- 700 mph
water- 3,500 mph
steel- 12,500 mph

49
Q

more elastic substances allow waves to travel more quickly

A

elasticity

50
Q

the way frequency and pitch appear to change with a moving object

A

doppler effect

51
Q

when a wave meets a surface or boundary and bounces back

A

reflection

52
Q

when waves pass the edge of a boundary and spread out, almost as if new waves were created

A

diffraction

53
Q

when multiple waves are in the same location at the same time bombining to make a single new wave

A

interference

54
Q

when a crest of one wave combines with another crest to create a huge crest

A

contructive interference

55
Q

when a trough of one wave meets the crest of another and they cancel eachother out

A

destructive interference

56
Q

the result from interference of a wave and a reflected wave that causes a medium to vibrate in a stationary pattern

A

standing wave

57
Q

parts of standing waves that appear not to vibrate of move

A

node

58
Q

part of a standing wave that moves up and down forming the crest and troughs

A

antinode

59
Q

caused from vibrations and travels through air or other mediums as a longitudinal wave

A

sound

60
Q

the louder the sound is, the more defined the

A

compressions and rarefactions become

61
Q

we can hear

A

20 to 20,000 hz

62
Q

dogs can hear up to__________ and cats up to _______

A

dogs- 25,000 hz

cats- 65,000 hz

63
Q

intensity of sound is determined by how much_______ is carried by the sound wave

A

energy

64
Q

more energy means

A

more amplitude, and louder sound

65
Q

intensity is measured in

A

decibels

66
Q

range is ___ above ____ causes hearing loss

A

0-120, 120

67
Q

sounds below the 20 hz we can hear

A

infrasonic

68
Q

sounds above the 20,000 hz we can hear

A

ultrasonic

69
Q

pitch depends on__________

A

frequency

70
Q

the quality of sound

A

timbre

71
Q

lowest frequency created

A

fundamental tone

72
Q

all the sounds higher than the fundamental tone

A

overtones

73
Q

shorter strings, thinner strings, short columns of air produce

A

higher pitches

74
Q

longer of thicker strings, longer columns produce

A

lower pitches

75
Q

uses reflected sound waves and allows large distances ti be measured accurately.

A

sonar, bats use sonar

76
Q

can produce interference patterns

A

wave like

77
Q

the photoelectric effect experiment proves that light also travels as particles

A

particle like

78
Q

energy-as frequency goes up, so does

A

energy or power

79
Q

what has a lower frequency than blue

A

red

80
Q

additive colors

A

red, green, blue

81
Q

adding all three primary colors (additive) equals

A

white

82
Q

subtractive colors

A

magenta, cyan, and yellow- equals black when all added

83
Q

transparent object that refracts light so that it either converges on a point or diverges in all directions

A

lenses

84
Q

thicker in the middle, rays are bent inward an create a virtual image

A

convex

85
Q

caused particles to move back and forth

A

radio waves

86
Q

relfected radio waves to determine locations and speeds of objects

A

radar

87
Q

emitted by the sun and has enough energy to kill cells and cause cancer

A

ultraviolet radiation

88
Q

powerful enough to go through soft tissues but not bone

A

x rays

89
Q

the most intense energy, given off during nuclear reactions

A

gamma radiation

Physics (3 decks)

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