—·Physics · GCSE
Same Speed, Different Energy
If every electromagnetic wave travels at the same speed, what makes a gamma ray dangerous and a radio wave harmless? Amplitude, wavelength, frequency and period, with transverse and longitudinal waves drawn side by side; the seven bands of the spectrum in order, with what each is used for; reflection, refraction, absorption and colour, under Röntgen's first X-ray of 1895; the three relationships with the recall/given chip; a worked wavelength from a frequency. Eight terms to define, a model answer on why gamma rays ionise, and the misconceptions that cost marks.
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