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GCSE AQA Physics > P12 - Reflection/ Refraction > Flashcards

P12 - Reflection/ Refraction Flashcards

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1
Q

3 effects of a wave at a boundary

A

-reflection
transmission
-refraction

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2
Q

ripple tanks

A

-used to study waves in controlled conditions
-makes plane waves by moving a straight edge along the water surface
-waves will move at same speed/distance

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3
Q

plane waves

A

straight waves

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4
Q

speed of waves -

A

distance travelled by each wave every second through a medium
-speed of energy transfer

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5
Q

wave speed formula

A

frequency x wavelength

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6
Q

speed of sound formula

A

distance/time

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7
Q

normal of surface

A

90 degrees to surface

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8
Q

refraction

A

change of direction of wave when they cross a boundary between mediums

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9
Q

Refraction: non zero angled wave to boundary

A

change speed + direction

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10
Q

Refraction: normal incident ray

A

speed changes only

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11
Q

wave front

A

line from crest to trough

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12
Q

diff between refracted and incident waves

A

-same frequency
-diff speeds so diff wavelengths

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13
Q

Refraction: more dense medium

A

-refracted ray will be towards normal (smaller angle )

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14
Q

Refraction: less dense medium

A

-refracted ray will be away from normal (larger angle )

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15
Q

Law of reflection

A

angle of incidence = angle of reflection

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16
Q

partial reflection

A

-waves directed at a substance may be reflected and some may be transmitted/absorbed
-depends on surface/wavelength

17
Q

waves that are absorbed by waves

A

some waves are absorbed by substance
-heats surface = energy gain

18
Q

amplitude in absorption

A

as waves travel through
-amplitude decreases
-as more energy is absorbed

19
Q

transmission

A

-waves that aren’t absorbed are allowed to pass through

20
Q

reflection in a ripple tank

A

-plane waves are reflected from a straight barrier at same angle as incident waves
-speed/ wavelength won’t change

21
Q

does reflection of a wave alter speed or wavelength

A

no
-no change in medium
-reflected into original medium

GCSE AQA Physics (37 decks)

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