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Physics - GCSE > Electromagnetic Spectrum > Flashcards

Electromagnetic Spectrum Flashcards

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1
Q

What are the seven parts of the electromagnetic spectrum, in order?

A 
Left} Radio
Micro
Infared
Visible light
Ultra violet
X-ray
Gamma
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2
Q

On the left side of the electromagnetic spectrum {radio waves} is the frequency high or low?

A

Low

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3
Q

On the left side of the electromagnetic spectrum {radio waves} is the wavelengths long or short?

A

Long

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4
Q

On the left side of the electromagnetic spectrum {radio waves} is the energy high or low?

A

Low

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5
Q

What is special about micro, infared, visible light and ultra violet?

A

They all have heating effects

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6
Q

What’s special about microwaves?

A

It has a range of different wavelengths and frequencies

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7
Q

What is the visible light spectrum?

A 
Red
Orange
Yellow
Green
Blue
Indigo
Violet
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8
Q

What’s a use of radio waves?

A 
Communication
Radio
Tv
Mobile phones
Bluetooth
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9
Q

What’s a hazard of radio waves?

A

None are known

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10
Q

What’s a use of micro waves?

A

Heating effect
Communication
Mobile phones

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11
Q

What’s a hazard of micro waves?

A

Possible internal heating of body tissues

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12
Q

What’s a use of infared waves?

A

Heating effect
Cameras
Scanners
Remote controls

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13
Q

What’s a hazard of infared waves?

A

Heat

Burns skin

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14
Q

What’s a use of visible light?

A

Photos

Fibre optic cables

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15
Q

What’s a hazard of visible light?

A

Can damage the eyes

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16
Q

What’s a use of ultra violet light?

A

Sun beds

Checking for counterfeit money and passports

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17
Q

What’s a hazard of ultra violet light?

A

Can cause skin cancer

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18
Q

What’s a use of X-rays?

A

Scanning for broken bones

Scanning bags in airports

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19
Q

What’s a hazard of X-rays?

A

Can cause cancer

Any dose can be fatal

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20
Q

What’s a use of gamma rays?

A

Sterilising food
Sterilising surgical equipment
Treating cancer

21
Q

What’s a hazard of gamma rays?

A

Causes cancer

Any dose can be fatal

22
Q

What types of waves are electromagnetic waves?

A

Transverse

23
Q

What are electromagnetic waves?

A

Electric and magnetic disturbances that transfer energy from one place to another

24
Q

What do all electromagnetic waves travel at?

A

The speed of light

25
Q

What is ionising?

A

Ionising is adding or removing an electron in an atom

26
Q

What are the radiations that have ionising radiation?

A

Gamma, X-rays and ultra violet

27
Q

What are the two steps of communicating using radio waves?

A

Transmitter produces alternating current, radio waves are emitted at same frequency as this current –> receiver aerial absorb waves

28
Q

What can interference be caused by?

A

Signal from a different radio stations using the same frequencies

29
Q

What are radio waves converted into?

A

An alternating current

30
Q

What is diffraction?

A

Where a wave bends when passing through a gap

31
Q

If a wave passes through a gap bigger than it, how does the wave refract?

A

It bends a little bit

32
Q

If a wave passes through a gap smaller than it, how does the wave refract?

A

Wave doesn’t bend at all

33
Q

What two things can radio waves do?

A

Refract and reflect

34
Q

Which radio waves refract, which radio waves reflect?

A

Long waves refract, short waves reflect

35
Q

What are the steps of a signal from a phone making a call to a person close to you?

A

Mobile phone sends our microwave signal to base station, which then goes to the receiving phone

36
Q

What are the steps of a signal from a phone making a call to a person far away from you?

A

Mobile phone sends our microwave signal to satellite, which is then sent to base station, which then goes to the receiving phone

37
Q

What are oscillations?

A

Movements back and forth in a regular rhythm

38
Q

How are radio waves detected?

A

By producing oscillations in circuits attached to an Ariel

39
Q

What two things emits infared radiation?

A

Toasters and grills

40
Q

How would infrared travel down glass?

A

The light is reflected down the glass

41
Q

What three things can happen to electromagnetic waves when they hit a surface?

A

They can be reflected, absorbed or transmitted

42
Q

What do HOW waves behave depend on?

A

Their energy and material around them

43
Q

What can ionising radiation do?

A

Damage `DNA in cells, killing them

44
Q

What direction would a particle in a transverse wave move in? What direction would the transverse wave move in?

A

Particle Up and down, wave to the right

45
Q

What direction would a particle in a longitudinal wave move in? What direction would the longitudinal wave move in?

A

Particle back and forth left to right, wave to the right

46
Q

What is an example of a longitudinal wave?

A

Sound

47
Q

What is an example of a transverse wave?

A

Light, water, everything in the electromagnetic spectrum

48
Q

What do waves do in a medium?

A

Waves transfer energy through a medium without transferring matter

Physics - GCSE (6 decks)

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