Electromagnetic waves 1.0 / 5 based on 1 rating ? PhysicsElectromagnetic SpectrumGCSEAQA Created by: Sam EvansCreated on: 23-05-14 20:44 Which part of the electromagnetic spectrum has the longest wavelengths? Radio waves 1 of 11 Which part og the electromagnetic spectrum is between X-rays and visible light? Ultraviolet 2 of 11 Which part of the electromagnetic spectrum transfers the least energy? Radio waves 3 of 11 Which part of the electromagnetic spectrum is used to transmit signals to and from satellites? Micro waves 4 of 11 How does visible light travel along an optical fibre? By total internal reflection 5 of 11 What is the Doppler effect? The apparent change in wavelength and frequency of waves from a moving source 6 of 11 What is a galaxy? A very large collection of stars 7 of 11 What has happened to the frequency of light that reaches Earth from distant galaxies? It has been shifted towards the red end of the spectrum 8 of 11 How can we tell if light from a distant galaxy has been red-shifted? By observing the position of dark lines in the spectrum from the galaxy 9 of 11 What has happened to the gamma radiation produced at the time of the Big Bang? It has become stretched out to microwave radiation 10 of 11 What piece of evidence can only be explained by the Big Bang theory? The existence o cosmic cosmic microwave background radiation 11 of 11
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