Waves the electromagnetic spectrum
2 marks · NormalExplain why gamma rays and X-rays are placed at the same end of the electromagnetic spectrum.
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Must show: Reference to short wavelength and high frequency for both, Recognition they are both higher in frequency than UV
Also accept: Gamma rays and X-rays both have very short wavelengths and very high frequencies; they are at the high-frequency end of the spectrum
Common mistakes: Mentioning energy only without frequency/wavelength
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Marking points
B1 · 1 mark · States that both have very short wavelengths or very high frequencies.
B2 · 1 mark · States they are at the high-frequency (or short wavelength) end of the EM spectrum.
Worked solution
Gamma rays and X-rays are at the same end because both have the shortest wavelengths and highest frequencies in the spectrum. They are more energetic and beyond ultraviolet.