Difference between revisions of "Nuclear Fusion"
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: '''Nuclear fusion''' is possible in [[laboratory|laboratories]] on [[Earth]] but it cannot be sustained for long periods of [[time]] to produce enough [[energy]] to be useful as an [[Energy Resource|energy resource]]. | : '''Nuclear fusion''' is possible in [[laboratory|laboratories]] on [[Earth]] but it cannot be sustained for long periods of [[time]] to produce enough [[energy]] to be useful as an [[Energy Resource|energy resource]]. | ||
: '''Nuclear fusion''' in [[laboratory|laboratories]] on [[Earth]] must be done at much higher [[temperature]] than in the centre of [[Star]]s because the centre of [[Star]]s is a much higher [[pressure]] so [[Atomic Nucleus|nuclei]] collide more often. | : '''Nuclear fusion''' in [[laboratory|laboratories]] on [[Earth]] must be done at much higher [[temperature]] than in the centre of [[Star]]s because the centre of [[Star]]s is a much higher [[pressure]] so [[Atomic Nucleus|nuclei]] collide more often. | ||
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+ | {| class="wikitable" | ||
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+ | |[[File:FusionPPD.png|center|400px]] | ||
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+ | | style="height:20px; width:400px; text-align:center;" |'''Fusion''' of two [[Hydrogen]] [[Atomic Nucleus|nuclei]] ([[proton]]s) produces a [[Deuterium]] [[Atomic Nucleus|nucleus]]. | ||
+ | <math>{}_1^1H + {}_1^1H \rightarrow {}_1^2H</math> | ||
+ | |} | ||
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+ | |[[File:Picture.png|center|200px]] | ||
+ | |[[File:Picture.png|center|200px]] | ||
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+ | | style="height:20px; width:200px; text-align:center;" |Text | ||
+ | | style="height:20px; width:200px; text-align:center;" |Text | ||
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Revision as of 13:21, 11 March 2019
Key Stage 4
Meaning
Nuclear fusion is a process in which two small atomic nuclei join together to become a larger nucleus.
About Nuclear Fusion
- For a fusion reaction to occur the two nuclei must have enough kinetic energy to overcome the electrostatic force of repulsion between the positively charged nuclei.
- To provide enough kinetic energy to the nuclei the substance must be heated to a temperature of several million degrees Celsius.
- Nuclear fusion occurs naturally in the centre of a Star due to the high temperatures and pressure.
- Nuclear fusion is possible in laboratories on Earth but it cannot be sustained for long periods of time to produce enough energy to be useful as an energy resource.
- Nuclear fusion in laboratories on Earth must be done at much higher temperature than in the centre of Stars because the centre of Stars is a much higher pressure so nuclei collide more often.
Fusion of two Hydrogen nuclei (protons) produces a Deuterium nucleus.
\({}_1^1H + {}_1^1H \rightarrow {}_1^2H\) |
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|- | style="height:20px; width:200px; text-align:center;" |Text | style="height:20px; width:200px; text-align:center;" |Text |}