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Created page with "==Key Stage 5== ===Meaning=== A '''chain reaction''' is a series of reactions in which each reaction causes a further reaction. ===About Chain Reactions=== *In a Nuclear R..."
==Key Stage 5==
===Meaning===
A '''chain reaction''' is a series of reactions in which each reaction causes a further reaction.
===About Chain Reactions===
*In a [[Nuclear Reactor|nuclear reactor]], each [[Nuclear Fission|fission]] event caused by a [[neutron]] produces additional [[neutron]]s that cause further [[Nuclear Fission|fission]] events.
*A steady '''chain reaction''' occurs when one [[Nuclear Fission|fission]] [[neutron]] on average from each [[Nuclear Fission|fission]] event produces another [[Nuclear Fission|fission]] event.
*[[Nuclear Chain Reaction|Nuclear '''chain reactions''']] require a [[Critical Mass|critical mass]] of the [[Fissionable Material|fissionable material]].
*'''Chain reactions''' can be controlled or uncontrolled.
*Controlled '''chain reactions''' are used in [[Nuclear Reactor|nuclear reactors]] to generate [[power]].
*Uncontrolled '''chain reactions''' occur in [[Nuclear Weapon|nuclear weapons]].
*The ability to control the '''chain reaction''' is crucial for the safe operation of [[Nuclear Reactor|nuclear reactors]].
===Examples===
*[[Uranium-235]] and [[Plutonium-239]] are [[material]]s capable of sustaining a '''chain reaction'''.
*'''Chain reactions''' are controlled in [[Nuclear Reactor|nuclear reactors]] to produce [[energy]] and uncontrolled in [[Nuclear Weapon|nuclear weapons]] for explosive effects.
===Meaning===
A '''chain reaction''' is a series of reactions in which each reaction causes a further reaction.
===About Chain Reactions===
*In a [[Nuclear Reactor|nuclear reactor]], each [[Nuclear Fission|fission]] event caused by a [[neutron]] produces additional [[neutron]]s that cause further [[Nuclear Fission|fission]] events.
*A steady '''chain reaction''' occurs when one [[Nuclear Fission|fission]] [[neutron]] on average from each [[Nuclear Fission|fission]] event produces another [[Nuclear Fission|fission]] event.
*[[Nuclear Chain Reaction|Nuclear '''chain reactions''']] require a [[Critical Mass|critical mass]] of the [[Fissionable Material|fissionable material]].
*'''Chain reactions''' can be controlled or uncontrolled.
*Controlled '''chain reactions''' are used in [[Nuclear Reactor|nuclear reactors]] to generate [[power]].
*Uncontrolled '''chain reactions''' occur in [[Nuclear Weapon|nuclear weapons]].
*The ability to control the '''chain reaction''' is crucial for the safe operation of [[Nuclear Reactor|nuclear reactors]].
===Examples===
*[[Uranium-235]] and [[Plutonium-239]] are [[material]]s capable of sustaining a '''chain reaction'''.
*'''Chain reactions''' are controlled in [[Nuclear Reactor|nuclear reactors]] to produce [[energy]] and uncontrolled in [[Nuclear Weapon|nuclear weapons]] for explosive effects.