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Electromagnetic waves

6 lessons in Waves.

54 exam questions · 126 marks

6.8 The electromagnetic spectrum The electromagnetic spectrum: transverse waves that travel at the same speed in a vacuum, the seven groups in order of wavelength and frequency, and the visible spectrum. AQA Edexcel OCR 6.9 Uses and dangers of electromagnetic waves The uses of each part of the electromagnetic spectrum, why they are suited to those uses, and the dangers of ultraviolet, X-rays and gamma rays. AQA Edexcel OCR 6.10 Required practical: infrared radiation from surfaces Required practical: investigate how the surface of an object affects the amount of infrared radiation it emits (and absorbs), using a Leslie cube and an infrared detector. AQA Edexcel OCR 6.11 Black body radiation and the temperature of the Earth How all objects emit electromagnetic radiation, how intensity and wavelength depend on temperature, perfect black bodies, and the factors that decide the temperature of the Earth. For Separate Science. Separate only AQA Edexcel OCR 6.12 Lenses Convex and concave lenses, focal length, ray diagrams for real and virtual images, and magnification = image height / object height. For Separate Science. Separate only AQA Edexcel OCR 6.13 Visible light, colour and reflection Specular and diffuse reflection, why objects appear coloured, transparent, translucent and opaque materials, and the effect of colour filters. For Separate Science. Separate only AQA Edexcel OCR