AQA A Level Psychology复习笔记1.1.1 Types of Conformity
Types of Conformity Conformity is when an individual has a change in belief or behaviour in order to fit in with a group. What are the different types of conformity? Compliance When an indiv...
AQA A Level Physics复习笔记8.4.7 Safety Aspects of Nuclear Reactors
Safety Aspects of Nuclear Reactors Nuclear Fuel The fuel used in nuclear reactors is called enriched uranium This is U-238 enriched with U-235 as U-235 is the isotope that undergoes fission ...
AQA A Level Physics复习笔记8.4.6 Operation of a Nuclear Reactor
Components of a Nuclear Reactor Moderator The purpose of a moderator: To slow down neutrons The moderator is a material that surrounds the fuel rods and control rods inside the reactor core ...
AQA A Level Physics复习笔记8.4.5 Induced Fission
Induced Fission Induced nuclear fission occurs: When a stable nucleus splits into small nuclei from the bombardment of a slow-moving neutron For example, when a uranium-235 nucleus absorbs a...
AQA A Level Physics复习笔记8.4.4 Binding Energy
Binding Energy per Nucleon Graph In order to compare nuclear stability, it is more useful to look at the binding energy per nucleon The binding energy per nucleon is defined as: The binding ...
AQA A Level Physics复习笔记8.4.3 Nuclear Fusion & Fission
Nuclear Fusion & Fission Nuclear Fusion Fusion is defined as: The fusing together of two small nuclei to produce a larger nucleus Low mass nuclei (such as hydrogen and helium) can underg...
AQA A Level Physics复习笔记8.4.2 Mass Difference & Binding Energy
Mass Difference & Binding Energy Experiments into nuclear structure have found that the total mass of a nucleus is less than the sum of the masses of its constituent nucleons This differ...
AQA A Level Physics复习笔记8.4.1 Energy & Mass Equivalence
Energy & Mass Equivalence Einstein showed in his theory of relativity that matter can be considered a form of energy and hence, he proposed: Mass can be converted into energy Energy can ...
AQA A Level Physics复习笔记8.3.7 Nuclear Density
Constant Density of Nuclear Material Assuming that the nucleus is spherical, its volume is equal to: Where R is the nuclear radius, which is related to mass number, A, by the equation: Where...
