keywords: ionising radiation, ion, radioactive, nuclear reactors, control rods keywords: alpha,...
TRANSCRIPT
Keyw
ord
s: Io
nis
ing
rad
iatio
n, io
n, ra
dio
activ
e, n
ucle
ar re
acto
rs, c
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trol ro
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Keywords: alpha, beta, gamma, nuclear fission, nuclear fusion
P2 Topic 5: Nuclear Fission and nuclear fusionThis topic looks at:
•Isotopes
•Ionising Radiation
•Nuclear Reactions – Fission and Fusion
•How nuclear reactors work
Define the term isotope:
Provide the number of protons, electrons and neutrons for each of these isotopes of chlorine
Label the atomWhat are the particles in the nucleus called?
LABEL THE POWER STATION DIAGRAM
What do the control rods do?
Keyw
ord
s: Io
nis
ing
rad
iatio
n, io
n, ra
dio
activ
e, n
ucle
ar re
acto
rs, c
on
trol ro
ds
Keywords: alpha, beta, gamma, nuclear fission, nuclear fusion
P2 Topic 5: Nuclear Fission and nuclear fusionThis topic looks at:
•Isotopes
•Ionising Radiation
•Nuclear Reactions – Fission and Fusion
•How nuclear reactors work
What is an ion?
What is ionising radiation?
What is a radioactive substance?
Explain nuclear fission (use diagrams): Explain nuclear fusion (use diagrams):
Put the following steps in the correct order to explain how a nuclear power station works:
a. Reactor contains nuclear fuel rods
b. Electricity is produced
c.Turbine spins the generator
d. This produces a lot of heat which boils
water in nearby pipes.
e. In the heat exchange water boils to form
steam, it moves turbines
f. Electricity sent to the National
Grid
Keyw
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s: H
aza
rd, ris
k, m
uta
tion
, backg
rou
nd
rad
iatio
n
Keywords: Half-life, GM Tube, count rate, radioactive decay, HLW, LLW, ILW, nuclear power
P2 Topic 6: Benefits and drawbacks of using radioactive materialsThis topic looks at:
•The changing ideas of radioactivity
•What happens to nuclear waste
•Half-life
•Background Radiation
•Uses of radiation
How did each of these scientists contribute to our understanding of radiation?Henri Becquerel:
Marie Curie:
Ernest Rutherford:
Explain what half-life is:
Fill in this table assuming there is a 10% decay every hour:
Time from start (hours)
0 1 2 3 4 5 6
No. of unstable atoms
1000 900 477
No, of unstable
atoms that decay in the
next hour
100 90 48
What is the main cause of background radiation in the UK?
How is the radioactivity of a source measured?
What does the term count rate mean?
Method of disposal Problems
Firing into space
Dumping barrels in the sea
Storage underground
HLW –
ILW –
LLW -
Keyw
ord
s: H
aza
rd, ris
k, m
uta
tion
, backg
rou
nd
rad
iatio
n
Keywords: Half-life, GM Tube, count rate, radioactive decay, HLW, LLW, ILW, nuclear power
P2 Topic 6: Benefits and drawbacks of using radioactive materialsThis topic looks at:
•The changing ideas of radioactivity
•What happens to nuclear waste
•Half-life
•Background Radiation
•Uses of radiation
What is the half-life of the following isotopes and what ionising radiation do they emit?
Uranium-235
Technetium-99
Carbon-14
Radon-222
Thallium-208
Stronium-90Define the term
• Irradiating
Explain the difference between irradiated and radioactive:
What are the benefits and drawbacks of irradiating food?
Benefits Drawbacks
How can gamma rays be used to help diagnose and treat cancer?
Describe the uses of radioactivity in household smoke alarms