Nuclear Fission & Fusion (AQA GCSE Physics): Flashcards
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11 cards from this deck
What can neutrons start?
What can neutrons start?
A chain reaction
Type of energy neutrons from fission have
Type of energy neutrons from fission have
Kinetic energy
What absorbs neutrons causing further fission?
What absorbs neutrons causing further fission?
Large, unstable nuclei
What happens when an unstable nucleus absorbs a neutron?
What happens when an unstable nucleus absorbs a neutron?
Another fission reaction occurs
Why are chain reactions dangerous?
Why are chain reactions dangerous?
Very difficult to stop and escalate quickly
What does each fission reaction produce?
What does each fission reaction produce?
Many neutrons
What device controls nuclear reactors?
What device controls nuclear reactors?
Control rods
What is the function of control rods?
What is the function of control rods?
Absorb excess neutrons
What role do neutrons play in fission?
What role do neutrons play in fission?
They induce fission reactions
Type of reactions in nuclear weapons
Type of reactions in nuclear weapons
Uncontrolled nuclear fission reactions
What results from an uncontrolled chain reaction?
What results from an uncontrolled chain reaction?
An explosion