The Big Bang Theory 0.0 / 5 ? PhysicsAstronomyGCSEAQA Created by: HopeCreated on: 27-05-14 17:56 What is the big bang theory? All matter was concentrated into a single tiny point, this began to enlarge rapidly in a hot explosion 1 of 6 In terms of the doppler effect, what happens when a source is moving towards an observer? The wavelength decreases and the frequency increases 2 of 6 In terms of the doppler effect, what happens when a source is moving away from an observer? The wavelength increases and the frequency decreases 3 of 6 How do we know there is helium in our sun? On the suns spectrum of light there are black lines from when the helium has absorbed the light 4 of 6 Complete this sentence: The further aay a star is.... The more of its light is red-shifted 5 of 6 What does red shift tell us? Galaxies are moving away from us 6 of 6
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