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GCSE Physics paper 2 > Waves > Flashcards

Waves Flashcards

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1
Q

The maximum displacement of a point on a wave away from its undisturbed position is the…

A

Amplitude

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2
Q

The distance from a point on one wave to the equivalent point on the next wave is the …

A

wavelength

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3
Q

The number of waves passing a point each second is the…

A

Frequency

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4
Q

Name an example of a longitudinal wave

A

Sound

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5
Q

Name an example of a transverse wave

A

light, water, any electromagnetic

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6
Q

Oscillations are along the same direction as the direction of travel is a _________ wave

A

longitudinal

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7
Q

Oscillations are at right angles to the direction of travel in a ____________ wave

A

transverse

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8
Q

The time needed for one wave to pass a given point is the…

A

period

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9
Q

The region in a longitudinal wave where particles are closest together is a …

A

compression

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10
Q

The region in a longitudinal wave where particels are furthest apart is a…

A

rarefaction

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11
Q

An object is said to _________ radiation when energy from an EM wave is taken up by the object

A

absorb

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12
Q

An object is said to _________ radiation when a wave can pass through the object

A

transmit

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13
Q

The process taking place when a wave bounces off of a surface

A

reflection

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14
Q

The process taking place when a wave enters a different density medium and changes direction

A

refracion

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15
Q

Refraction changes both the _________ and ___________ of a wave

A

direction and speed

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16
Q

Which two angles are equal in reflection

A

angle of incidence and angle of reflection

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17
Q

Draw a transverse wave and label the wavelength and amplidtue

A

teacher to draw on board…

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18
Q

Draw a longitudinal wave and label the wavelength

A

teacher to draw on board…

19
Q

Write the equation linking frequency, wavelength and wave speed

A

v = fλ

20
Q

What is the unit of frequency?

A

Hertz (Hz)

21
Q

What is the unit of wavelength?

A

metres (m)

22
Q

What is the unit of wave speed?

A

metres per second (m/s)

23
Q

What is the speed of elecrtomagnetic radiation?

A

300 000 000 m/s

24
Q

What is the EM radiation with the shortest wavelength?

A

gamma

25
Q

What is the EM radiation with the longest wavelength?

A

Radio

26
Q

What is the EM radiation with the highest frequency?

A

Gamma

27
Q

What is the EM radiation with the lowest frequency?

A

Radio

28
Q

List the EM spectrum from long to short wavelength.

A

Radio, microwave, infrared, visible, UV, X-rays, gamma

29
Q

Can EM waves travel through space?

A

yes

30
Q

Can sound waves travel through space?

A

no

31
Q

Does a sound wave travel faster in water or air?

A

water

32
Q

Name a use of radio waves

A

TV and radio transmission

33
Q

What EM wave is used for satellite communication?

A

microwave

34
Q

Give one use of microwaves

A

cooking food

35
Q

Give two uses of IR radiation

A

electrical heaters, infrared cameras

36
Q

Give a use of visible radiation

A

Fibre optic communications

37
Q

Which radiation is used in sun tanning?

A

UV

38
Q

Give one use of X-rays.

A

Medical imaging

39
Q

Give one use of gamma rays

A

Medical treatments

40
Q

Why are X-rays good for taking images of bone?

A

absorbed by bone but transmitted through soft tissue

41
Q

Why are gamma rays used in medical treatment?

A

Can kill cancer cells

42
Q

What are the risks of exposure to UV radiation?

A

Premature skin aging, increased risk of skin cancer

43
Q

What are the risks of exposure of X-rays?

A

X-rays are ionising so can cause mutations which may result in cancer

44
Q

What are the risks of exposure to gamma rays?

A

Gamma rays are ionising so can cause mutations which may result in cancer

GCSE Physics paper 2 (3 decks)

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