In-depth notes covering all you need to know and more for your GCSE physics exam! These typed notes are beautifully and expertly formatted; they are comprehensive and contain clear diagrams (from Google images) where necessary to help illustrate these concepts.
By a predicted grade 9 iGCSE phys...
1.
A. What a wave is
i. The transfer of energy by means of a chain of to-and-fro movements
(oscillations)
ii. Two types of wave:
Transverse ~ oscillations at right angles to the energy transfer direction,
tend to have a regular wavelength (frequency)
, Longitudinal ~ oscillations along the energy transfer direction, wavelength
(frequency) can vary throughout one oscillation
iii. Measurements:
Distance measurements
o Amplitude (A)
o Wavelength (l)
A
A l
l
l
Time measurements
o Period =l the time for one complete oscillation
o Frequency = the number of oscillations/second
2
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