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6.2 Revision
(EDUQAS)
Cosmology & Particles
(Comps 2.7 & 3.7)
Cosmology and Particles - Syllabus
NB You MUST refer to:
Pages 70 to 86 of Eduqas Physics for A Level Year 1 & AS
Pages 62 to 75 of Eduqas Physics - A Level Year 1 & AS – Study and Revision Guide
Terms, Definitions and Units – see Course Info: Sixth Form of Firefly
2.7 USING RADIATION TO INVESTIGATE STARS
3.7 PARTICLES AND NUCLEAR STRUCTURE
2.8 ORBITS AND THE WIDER UNIVERSE
NOTES
Black boxes indicate bits that are new to Eduqas
This WJEC PH2.5 bit is no longer in Eduqas – but you know it
from Shells:
This WJEC PH2.5 bit crops up in Eduqas Comp 3.4 – Photons:
These WJEC PH2.5 bits crop up in Eduqas Comp 3.8 – Nuclear
Energy:
Summarize the significance of the results of the Rutherford gold-leaf and alpha particle
scattering experiment
(6 marks)
What is the maximum size of the Coulomb repulsion force between an alpha particle
and a gold leaf nucleus (as described by the nuclear model of Ernest Rutherford, 1st
Baron Rutherford of Nelson)?
(4 marks)
The following approximate data may be useful:
radius of alpha particle = 1 fm
radius of Helium atom = 30 pm
radius of gold nucleus = 10 fm
radius of gold atom = 200 pm
EJT’s birthday = towards the end of the 1970s
What is the maximum size of the Coulomb repulsion force between an alpha particle
and a gold atom (as described by the Sir Joseph John Thomson’s plum-pudding model of
the atom)? (1 mark)
