Fig. 8.1 shows a diagram of a nuclear reactor.
Nuclear fission takes place in the fuel rods, which become hotter as a result. Thermal energy is transferred to the coolant flowing around the rods.
(a)[3]
In Table 8.1 state the function of each reactor part.
(b)[3]
Describe what triggers the fission of a single nucleus of uranium-235 in the fuel rods, and describe what occurs during the fission.
(c(i))[2]
The specific heat capacity of the coolant is a key quantity in reactor design.
State what is meant by ‘specific heat capacity’.
(c(ii))[1]
Suggest and explain whether the coolant ought to have a large or a small specific heat capacity.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Shielding absorbs radiation / safeguards workers” …