This fully-editable PowerPoint contains 15 slides that cover almost all of the content a GCSE student would need to know about how Cosmic Microwave Background Radiation (CMBR) and red shift of galaxies give evidence for the Big Bang Theory, including:
- A brief summary of the main ideas behind the Big Bang theory
- What “absorption spectra” are
- How absorption spectra change when the source moves away from us
- How red shift is an example of The Doppler Effect
- How the red shift of galaxies provides evidence that they are moving away from us
- Calculating the speed of movement of a galaxy using its Doppler shift/change in wavelength
- What Cosmic Microwave Background Radiation (CMBR) is
- How CMBR gives evidence for the Big Bang theory
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