Brainscape's Knowledge GenomeTM

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


See full index

Physics > Waves > Flashcards

Waves Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

Water waves are _____________ waves

A

Water waves are transverse waves.

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

In transverse waves vibrations are _____________ to the direction travel.

A

In transverse waves vibrations are perpendicular to the direction travel.

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

Sound waves and waves in a spring are ______________ waves.

A

Sound waves and waves in a spring are longitudinal waves.

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

In longitudinal the waves are ________ to the direction of travel.

A

In longitudinal the waves are parallel to the direction of travel.

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

The amplitude of a wave is its _________ ___________ from its resting point.

A

The amplitude of a wave is its maximum distance from its resting point.

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

The wave length of a wave is the _________ between a point on one wave and the _______ point on the next wave.

A

The wave length of a wave is the distance between a point on one wave and the same point on the next wave.

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

The frequency of a wave is the _______ of waves produced by a source each ____________.

A

The frequency of a wave is the number of waves produced by a source each second.

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

Wave speed is the __________ travelled by a wave in ___ second

A

Wave speed is the distance travelled by a wave in 1 second

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

Time period is the ________ taken to produced ____ wave.

A

Time period is the time taken to produced 1 wave.

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

Waves transfer ______ and __________ without transferring matter.

A

Waves transfer energy and information without transferring matter.

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

Light is part of a continuous ________________ spectrum which included :

All these waves travel at the same speed in free space

A 
Radio 
Microwave
Infrared 
Visible light
Ultra violet
X Ray 
Gamma ray
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Uses of electromagnetic spectrum:

Radio waves

A

broadcasting

communications

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

Uses of electromagnetic spectrum:

Microwaves

A

Cooking

Satellite transmission

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

Uses of electromagnetic spectrum:

Infrared

A

Heaters

Night vision equipment

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

Uses of electromagnetic spectrum:

Visible light

A

Optical fibres

photography

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

Uses of electromagnetic spectrum:

Ultra violet

A

Fluorescent lamps

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

Uses of electromagnetic spectrum:

X Rays

A

Observing the internal structure of objects and Material and medical applications

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

Uses of electromagnetic spectrum:

Gamma rays

A

Sterilising food and medical equipment

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

Effects of excessive exposure to the human body :

Microwaves

A

Internal heating of body tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Effects of excessive exposure to the human body :

Infrared

A

Skin burns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Effects of excessive exposure to the human body :

Ultra violet

A

Damage to surface cells and blindness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Effects of excessive exposure to the human body :

Gamma rays

A

Cancer

Mutation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

All electro magnetic waves are …

A

Transverse waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Electro magnetic waves can all be …

A

Reflected and refracted

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

All electromagnetic waves can all travel through a …

A

Vacuum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Protective measures against the risks :

A

Suncream
Sun glasses
Avoid
Check microwave doors good seal

27
Q

The angle of incidence always equal

A

The angle of incidence always equal angel of reflection

28
Q

The distance from the object to the mirror is the …

A

Same distance from the mirror t the image

29
Q

The image is always the same size as the object but …

A

Laterally Inverted

30
Q

When light enters a more optically dence medium …

A

It slows down. This cause the light to bend or refract.

31
Q

The amount that the light slows down in the medium is know as the ..

A

Refractive index

32
Q

Optical fibres can be used to ________ ___________ using _________ light or _________ radiation

A

Optical fibres can be used to transmit information using visible light or infrared radiation

33
Q

Relationship between critical angle and refractive index

A

SinC = 1

n

34
Q

For glass critical angle

A

42

35
Q

Refractive index

A

Refractive index = Sin i

Sin r

36
Q

Frequency range for human hearing is

A

20 hz - 20000 hz

37
Q

Wave speed

A

Wave speed = frequency x wavelength

38
Q

Frequency

A

1

Time period

39
Q

/\/\/ label the wave

A 
Wave length 
           |
    / \.----  /\
_/\_\_\_\\_\_/_|_\\_\_/
/.        \/.       \/
            Amplitude
40
Q 
Units 
Wave speed 
Wave length 
Frequency 
Time
A 
Units 
Wave speed m/s
Wave length m 
Frequency hz
Time s
41
Q

Light and other types of electromagnetic radiation are ______________ waves.

A

Light and other types of electromagnetic radiation are transverse waves.

42
Q

Refraction

A

causes a change in wave speed and wavelength not frequency

43
Q

Dispersion

A

When white light hits an optical boundary at an angle, the different wave lengths are refracted by different amounts and become separated.

44
Q

The effect of dispersion is best shown in a

A

Prism where the light hits the 2 boundaries which are at such an angle that the light completely dispersed so the entire spectrum is seen.

45
Q

Critical angle

A

A particular angle of incidence of a ray hitting a less dense medium which causes the Ray to be refracted at 90* to the normal

46
Q

Total internal reflection

A

This occurs when the angle of incidence of the Ray is greater than the critical angle then the Ray is completely internally reflected

47
Q

If the angle of incidence is less than the critical angle

A

The Ray is refracted with a very small reflection

48
Q

The angle of incidence is equal to the critical angle

A

Ray emerges along the edge of block

49
Q

The angle of incidence is greater than the critical angle

A

The Ray is totally internally reflected

50
Q

Light rays can be used to transfer

A

Energy and information along a fibre optic cable very efficiently

51
Q

Uses of total internal reflection

A

Periscopes
Reflectors
Optical fibres
Endoscopes

52
Q

Real image

A

Formed where light rays cross after reflections by a mirror

53
Q

Virtual image

A

Images are formed where light rays only appear to come from

54
Q

When the light reflects from the surface of a plane mirror the angle is incidence is _______ ___ the angle of reflection

A

Equal to

55
Q

Transverse waves

A

Eg rope, slinky spring, light

56
Q

Longitudinal waves

A

Eg slinky spring, sound

57
Q

Sound waves are

A

Longitudinal caused y the vibration I’d particle in a solid liquid or gas

58
Q

Areas where the Particles are close together in a wave are called

A

Compressions

59
Q

Human hearing

Lowest audible sound

A

21

60
Q

Human hearing

Highest audible sound

A

20

61
Q

\ /
\ /
__\/________

A

\ / reflected wave
\ /
__\/________
Incident wave

62
Q

Reflection occurs when a

A

wave bounces from the surface of an obstacle

63
Q

Reflection best occurs from

A

Flat, hard surfaces

64
Q

Properties of electromagnetic waves

A
  1. Transfer energy and information from one place to another
  2. All transverse waves
  3. Can all be deflected and refracted
  4. All travel at 300 000 000m/s in a vacuum

Physics (9 decks)

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