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Gcse Phy Spec PAPER 2 > Waves > Flashcards

Waves Flashcards

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1
Q

Two types of waves

A

Transverse and longitudinal

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2
Q

What is an example of a transverse wave in an experiment

A

The ripples on a water surface

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3
Q

What do longitudinal waves show areas of

A

Compressions and rarefactions

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4
Q

What are sound waves which travel through air

A

Longitudinal

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5
Q

What is the amplitude of a wave

A

The maximum displacement of a point on a wave away form its undisturbed position

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6
Q

What is the wavelength of a wave

A

The distance from on one way to the equivalent point on the adjacent wave

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7
Q

What is the frequency of a wave?

A

The number of waves passing a point each second

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8
Q

What is period measured in

A

Second (s)

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9
Q

What is period written as

A

T

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10
Q

How is frequency written

A

f

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11
Q

What is frequency measured in

A

hertz (Hz)

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12
Q

What is the wave speed

A

Is the speed at which the energy is transferred or the wave moves through the medium

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13
Q

What is the wave speed equation

A

Wave speed = frequency x wavelength

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14
Q

What is the wave speed equation in letters

A

[v=f(upside down y)]

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15
Q

How is wave speed written as

A

v

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16
Q

What is wave speed measured in?

A

Metres per second (m/s)

17
Q

How is wave length written as

A

(Upside down y)

18
Q

What is waves speed measured in ?

A

Meters per sec (m/s)

19
Q

What are Electromagnetic waves

A

Transverse waves

20
Q

What do electro magnetic waves do

A

They transfer energy from the source of a wave to an absorber

21
Q

What do electromagnetic waves form?

A

A continuous spectrum and all types of electromagnetic waves travel at the same velocity through a vacuum (space)or air

22
Q

In the Electromagnetic spectrum, what is the start to the end? In wavelength

A

Long to short

23
Q

In the Electromagnetic spectrum, what is the start to the end? In frequency

A

Low to high

24
Q

Name the waves in the electromagnetic spectrum?

A

Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays,gamma rays

25
Q

What do eyes need detect?

A

Visible light and so detect a limited range of electromagnetic waves

26
Q

What radio waves produce?

A

Oscillations in electrical circuits

27
Q

What happens when a radio wave is absorbed

A

They my create alternating current with the same frequency as the radio wave itself so radio waves can themselves induce oscillations in electrical circuit

28
Q

What can changes in atoms and the nuclei of atoms result in electromagnetic waves

A

Electromagnetic waves from being generated or absorbed over a wide frequency range

29
Q

What waves have hazardous effects on humans

A

Ultraviolet waves, x-rays, and gamma waves have effects on human body tissue

30
Q

Whats hazardous form the wave

A

Type of radiation ☢️ and the size of the dose

31
Q

What is radiation dose

A

A measure of the sick of harm resulting on exposure of the body to the radiation

32
Q

What can ultraviolet waves cause

A

It can cause teh skin to age prematurely and increase the risk of skin cancer

33
Q

What does x rays and gamma rays do to the body

A

They are ionising radiation and can cause mutations of genes, and therefore result to cancer

34
Q

What is a use of radio waves

A

Television and radio

35
Q

What is a use of microwaves

A

Satellite communication and cooking food

36
Q

What is a use of infrared

A

Electrical heaters, cooking food, infrared cameras

37
Q

What is a use of visible light

A

Fibre optic communications

38
Q

What is a use of ultraviolet

A

Energy efficient lamps, sun tanning

39
Q

What is a use of x rays and gamma rays

A

Medical imaging and treatments

Gcse Phy Spec PAPER 2 (3 decks)

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