6.2 revision (eduqas)
TRANSCRIPT
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6.2 Revision
(EDUQAS)
Cosmology & Particles
(Comps 2.7 & 3.7)
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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
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3.7 PARTICLES AND NUCLEAR STRUCTURE
2.8 ORBITS AND THE WIDER UNIVERSE
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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:
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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)