Doppler effect, red shift, CMBR and Big Bang animated powerpointQuick View
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Doppler effect, red shift, CMBR and Big Bang animated powerpoint

(5)
For use in a lesson on Doppler effect, red shift, CMBR and the Big Bang. Some suggestions for demo/practical and accompanying worksheet. Note: For the purposes of simplicity and continuity from the practical I have used emission spectra rather than absorption spectra to show the spectral lines from stars. This is adequate for GCSE classes but would be incorrect for A level.
Galileo vs AristotleQuick View
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Galileo vs Aristotle

(1)
Powerpoint discussing Galileo overturning Aristotle's ideas on falling objects. Included is an investigation for students to plan and undertake.