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gcse > p6 > Flashcards

p6 Flashcards

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1
Q

what is frequency?

A

n.o. of waves per second.

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2
Q

time period equation:

A

time period= 1 dividend by the frequency.

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3
Q

wave speed equation:

A

wave speed = wavelength times frequency

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4
Q

what is angle of incidence = to?

A

angle of reflection

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5
Q

what type of wave is a sound wave?

A

a longitudinal

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6
Q

what type of waves a p waves?

A

longitudinal

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6
Q

what type of waves a p waves?

A

longitudinal

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7
Q

what can p waves travel through?

A

solids and liquids

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8
Q

what type of waves are S waves?

A

transverse waves

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9
Q

what can S waves travel through?

A

solid

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10
Q

what are the properties of radio waves?

A

High wavelength
low frequency
low energy

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11
Q

what are the properties of gamma waves?

A

short wavelength
high frequency
high energy

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12
Q

what are gamma rays used for?

A

treating cancers

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13
Q

when does refraction occur?

A

when a wave passes from one medium into another medium, causing it to change direction.

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14
Q

are dark surfaces good or bad absorbers?

A

good absorbers

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15
Q

what colour surfaces are good emitters?

A

black

16
Q

what surfaces are good reflectors?

A

shiny surfaces

17
Q

properties of converging lenses:

A

can cure longsightedness
a real image
is magnified

18
Q

diverging lense properties:

A

virtual image
correct short-sightedness
smaller image

19
Q

refraction practical:

A

1) sketch around a glass block
2) draw a normal perpendicular to the mirror.
3) measure angle next to the normal.
4) then sketch the incident rays
5) move the ray box so it shines through the glass
6) Draw 3 crosses along the refracted beam
7) draw a line between where the light entered and left the glass
Then calculate the angle of refraction.

20
Q

definition of refraction:

A

the change of direction of light, as it passes from one medium to another.

gcse (26 decks)

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