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N5 Physics > Waves > Flashcards

Waves Flashcards

1
Q

state a detector of the visible spectrum

A

photographic film

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2
Q

state a detector of gamma rays

A

geiger tube and counter

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3
Q

what happens to wave energy as frequency increases in the electromagnetic spectrum

A

energy increases

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4
Q

state a source of microwaves

A

electrical circuits/ stars

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5
Q

state a use of ultraviolet waves

A

treating skin conditions/ used in skin to produce vitamin D

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6
Q

What is the order of the EM spectrum (start with longest wavelength)

A

radio, microwaves, infrared, visible, ultraviolet, x-ray, gamma ray

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7
Q

state a use of gamma rays

A

medical tracers/ sterilising surgical instruments

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8
Q

state a detector of ultraviolet waves

A

fluorescent materials

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9
Q

state a use of infrared

A

thermal imaging/ treating damaged muscles

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10
Q

state a source of gamma rays

A

nuclear decay/ cosmic rays

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11
Q

state a source of infrared

A

all hot objects/ stars

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12
Q

state a source of x-rays

A

man-made sources/ some stars

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13
Q

define amplitude (units)

A

half the vertical distance between crest and trough (m)

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14
Q

define frequency (units)

A

number of waves produced per second (Hz)

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15
Q

speed of sound

A

340ms-1

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16
Q

define period

A

time for one wave to pass a point

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17
Q

define a transverse wave

A

particles (or wave) vibrate at 90° to the direction of energy transfer

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18
Q

2 examples of transverse waves

A

light, water

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19
Q

define wavelength

A

distance between successive crests or troughs (m)

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20
Q

the angle of incidence is measured between which 2 lines

A

ray of light and normal line

21
Q

whe light travels from air to glass, the speed of light does what

A

slows down

22
Q

when light travels from air to glass, how does the angle of incidence compare to the angle of refraction

A

angle of refraction is less than the angle of incidence

23
Q

when white light refracts with a prism, which colour refracts the most

A

violet

24
Q

name the colours of the visible spectrum starting with the largest wavelength

A

red, orange, yellow, green, blue, indigo, violet

25
Q

state what is meant by the term refraction

A

the change in speed of light as it moves from one medium to another

26
Q

define a longitudinal wave

A

particles (or wave) vibrates in the same direction as the energy transfer

27
Q

example of longitudinal wave

A

sound

28
Q

when the size of the wavelength is much smaller than the size of the gap, is the diffraction large or small

A

small

29
Q

when the size of the gap is much larger than the wavelength, is the diffraction large or small

A

small

30
Q

which part of the EM spectrum will diffract around a mountain

A

radio waves

31
Q

which will diffract least around a hill, short wavelength radio or long wavelength radio waves

A

short wavelentgh radio

32
Q

how does the angle of incidence compare to the angle of reflection

A

angle of incidence=angle of reflection

33
Q

speed of light

A

3.0 x 10 8ms-1

34
Q

state a use of x-rays

A

detecting broken bones

35
Q

define crest and trough

A

the highest and lowest points of a wave

36
Q

what do all waves transfer

A

energy

37
Q

as wavelength increases, what happens to frequency if the speed remains the same

A

decreases

38
Q

what happens to frequency as wavelength increases

A

frequency decreases

39
Q

which colour in the visible spectrum has the largest wavelength

A

red

40
Q

which colour in the visble spectrum has the largest frequency

A

violet

41
Q

state a use of radio waves

A

communication

42
Q

state a use of microwaves

A

communication/ heating food

43
Q

state a use of the visible spectrum

A

laswr surgery/ sight

44
Q

state a detector of radio waves

A

aerial

45
Q

state a detector of x-rays

A

photographic film

46
Q

state a source of the visible spectrum

A

stars

47
Q

state a source of ultraviolet waves

A

stars

48
Q

state a detector of microwaves

A

aerial

49
Q

state a detector of infrared

A

thermometer

N5 Physics (6 decks)

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