Nuclear Fission (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Nuclear fission definition
Nuclear fission definition
Unstable nucleus splits into two or more pieces
Products when nucleus splits in fission
Products when nucleus splits in fission
Two smaller nuclei of different elements
Number of neutrons produced in fission
Number of neutrons produced in fission
Two or three neutrons
Chain reaction in nuclear fission
Chain reaction in nuclear fission
Neutrons absorbed by atoms cause further fission
What energy form is released besides kinetic energy in fission?
What energy form is released besides kinetic energy in fission?
Gamma rays
Use of gamma rays in nuclear power stations
Use of gamma rays in nuclear power stations
Heat water to steam, turn turbines, generate electricity
Function of control rods
Function of control rods
Absorb neutrons to control chain reaction rate
Result of uncontrolled chain reaction
Result of uncontrolled chain reaction
Huge energy release in explosion (nuclear weapons)
Frequency of spontaneous fission
Frequency of spontaneous fission
Rare
Components with kinetic energy after fission
Components with kinetic energy after fission
Smaller nuclei and neutrons
Rate of uncontrolled chain reaction
Rate of uncontrolled chain reaction
Exponential
Element used in nuclear fission process
Element used in nuclear fission process
Uranium
Reason nucleus absorbs neutron before fission
Reason nucleus absorbs neutron before fission
Needs extra energy to split
Size of two smaller nuclei produced
Size of two smaller nuclei produced
Different sizes (unequal)