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Powerpoint Description:This slideshow covers the following topics from the 2014 KS3 curriculum: water waves, superposition, reflection of sound waves, measuring the speed of sound, how sound travels, longitudinal waves, how the ear works, how different sounds appear on an oscilloscope, auditory ranges of different animals, pressure waves, how microphones work, using ultrasound to clean objects, transverse vs longitudinal waves, how light from the sun reaches us through a vacuum, transmission, absorption, diffuse scattering and specular reflection, reflection from a mirror, ray diagrams for mirrors, pinhole cameras, refraction, why the eye sees things upside down, transferring energy through a light wave, the colours of the rainbow, adding colours, primary and secondary colours, using filters, seeing coloured objects in different colours of light.
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