waves:
they are produced as a result of vibrations and do not transfer energy
longitudinal waves:
the particles vibrate parallel to the direction the wave is travelling e.g sound
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complete,fully solved
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exam for Physics Unit
2 CCEA GCSE
waves: - answer they are produced as a
result of vibrations and do not transfer energy
longitudinal waves: - answer the particles
vibrate parallel to the direction the wave is
travelling e.g sound
transverse waves: - answer particles vibrate
90 degrees to the direction of wave travel e.g
water and electromagnetic
longitudinal frequency: - answer the number
of vibrations made by a particle in 1 second
,longitudinal wavelength: - answer the
distance between the centre of one
compression and the next
longitudinal amplitude: - answer the
maximum distance any particle moved from
the centre
transverse frequency: - answer the number of
complete waves passing a point in 1 second
transverse wavelength: - answer the distance
between 2 crests or troughs
transverse amplitude: - answer the greatest
displacement from undisturbed position
speed of a wave= - answer frequency x
wavelength
,water travelling from deep to shallow: -
answer -waves slow down
-wavelength decreases
-frequency is unchanged
-angle of incidence in deep is greater than the
refraction
human hearing: - answer 20 Hz to 20000 Hz
(20 kHz)
ultrasound: - answer 20000 Hz and up, heard
by bats and dogs
sound energy: - answer it passes from
particle to particle so it cannot travel through
a vacuum
radar uses electromagnetic waves: - answer
track fast objects and those in far distances
ultrasound: - answer can be used to scan soft
tissues, to diagnose cancers and scan a womb
for foetus development while not disrupting
DNA
amplitude waves: - answer the height of the
crest/trough shows the amplitude
frequency waves: - answer the amount of
waves shows the frequency
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