Waves Flashcards

1
Q

What is one way energy may be transferred between stores?

**

A

Waves

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2
Q

What are waves?

A

OSCILLATIONS (the repeated fluctuations above and below the same position) or VIBRATIONS about a REST POSITION

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3
Q

What are mechanical waves?

A

Cause OSCILLATIONS of PARTICLES in a SOLID, LIQUID or GAS and MUST have a MEDIUM to TRAVEL THROUGH

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4
Q

What are electromagnetic waves?

A

Cause OSCILLATIONS in ELECTRICAL and MAGNETIC FIELDS

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5
Q

What are longitudinal waves?

A

VIBRATIONS which are PARALLEL to the DIRECTION of WAVE TRAVEL

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6
Q

What are transverse waves?

A

VIBRATIONS which MOVE at RIGHT ANGLES to the DIRECTION of WAVE TRAVEL

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7
Q

Why can waves be used to transfer energy?

A
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8
Q

What are some examples of transverse waves?

A

-Light

-Water Waves

-Waves on a string

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9
Q

What are some examples of longitudinal waves?

A

-Sound Waves

-Shock waves

-Waves in a Spring

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10
Q

What is one thing waves don’t transfer?

A

Matter (subatomic particles, atoms etc)

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11
Q

What is meant by rest position?

A

The UNDISTURBED POSITION of PARTICLES or FIELDS where they ARE NOT VIBRATING

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12
Q

What is meant by the displacement of a wave?

A

The DISTANCE that a CERTAIN POINT in the MEDIUM has MOVED from its REST POSITION

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13
Q

What is meant by the peak of a wave?

A

The HIGHEST POINT ABOVE a REST POSITION

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14
Q

What is meant by the trough of a wave?

A

The LOWEST POINT BELOW the REST POSITION

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15
Q

What is meant by the amplitude of a wave?

A

The MAXIMUM DISPLACEMENT of a POINT of a WAVE from its REST POSITION

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16
Q

What is meant by the wavelength of a wave?

A

The DISTANCE COVERED by a FULL CYCLE of the WAVE which is USUALLY MEASURED from PEAK to PEAK

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17
Q

What is meant by time period?

A

The TIME TAKEN for a FULL CYCLE of the WAVE which is USUALLY MEASURED from PEAK to PEAK or TROUGH to TROUGH

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18
Q

What is meant by frequency?

A

The NUMBER of WAVES PASSING a POINT EACH SECOND

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19
Q

What do longitudinal waves show?

A
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20
Q

What is the difference between longitudinal and transverse waves?

A
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21
Q

What are some examples of evidence that longitudinal waves transport sound waves through air and not the air itself?

A
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22
Q

What are some examples of evidence that transverse waves don’t move the water itself when it ripples?

A
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23
Q

Ask AI to generate a wave motion image and describe it in terms of amplitude, wavelength, frequency and period

(BLURT QUESTION)

A
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24
Q

How is the unit for period?

A
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25
What is the unit for frequency?
26
How do you calculate period?
27
What equation should the equation for period be applied to on the equation sheet?
28
What is the unit for wave speed?
29
What is the unit for frequency?
30
What is the unit for wave length?
31
How do you calculate wave speed?
32
What is a spectrum in terms of waves?
33
What kind of spectrum do electromagnetic waves form?
34
How many different types of electromagnetic waves are there?
35
How are the different electromagnetic wages grouped?
36
Why do different waves have different wavelengths?
37
What is the order of waves from shortest to longest wavelength?
38
What is a mnemonic to remember the order of electromagnetic waves from shortest to longest wavelength?
39
How does velocity change in electromagnetic waves?
40
Why can our eyes only detect limit a limited range of electromagnetic waves?
41
What are three things all electromagnetic waves do?
42
What is the correlation between wavelength, frequency and energy?
43
What are frequencies also known as?
44
What are radio waves used for?
45
Why are radio waves ideal for communications?
46
How can radio waves be produced?
47
What is a conductor?
48
What is an alternating current?
49
Why is this electrical current the same as radio waves?
50
How are messages transferred through these electromagnetic waves?
51
What are some uses of microwaves?
52
Why are microwaves ideal for heating food?
53
How do microwaves heat food?
54
Why are microwaves idea for satellite communications?
55
What is infrared light used for?
56
Why is infrared radiation useful for heating?
57
What is better at heating, infrared radiation or microwaves?
58
Why is infrared radiation useful for detecting people in the dark?
59
Why can infrared radiation detect any object?
60
What are some uses of visible light?
61
How does fibre optic communication work?
62
Why is ultraviolet light so dangerous?
63
What can ultraviolet light in sunlight causes?
64
What is an example of a fluorescent substance?
65
How do fluorescent substances make ultraviolet light useful?
66
What san changes in atomic nuclei cause?
67
What are gamma rays?
68
Why are gamma rays useful for internal imaging?
69
Why are X-rays used to help identify broken bones?
70
What are both ultraviolet waves and x-rays and gamma-rays forms of?
71
What is ionising radiation?
72
What hazardous effects have ultraviolet waves have on the human body?
73
What hazardous effects have x-rays have on the human body?
74
What is radiation dose?
75
What is radiation dose measured in?
76
What is the conversion rate from milli sieverts to sieverts?
77
What is background radiation?
78
What is the correlation between background radiation and radiation dose?
79
What are some sources of background radiation?
80
What factors affect the level of background radiation and radiation dose?
81
What is meant by the reflection of waves?
82
What does the reflection of sound cause?
83
What does the law of reflection state?
84
What is an example of the law of reflection?
85
What is the angle of incidence?
86
How are the angles of incidence and the angle of reflection measured?
87
What is the normal line?
88
Draw a diagram of a water wave and a light wave being reflected at a barrier (BLURT QUESTION)
89
What is meant by a plane?
90