nuclear fission Flashcards

1
Q

what does nuclear fission generate

A

electricity

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2
Q

what is nuclear fission

A

when a unstable nucleus, like uranium are forced to split into two lighter nuclei

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3
Q

for nuclear fission to occur what must happen

A

the uranium must first absorb a neutron and then split into two smaller nuclei releasing energy and several neutrons

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4
Q

does nuclear fission cause a chain reaction

A

yes

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5
Q

what is released when a atom splits

A

energy which can be used for nuclear power plants

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6
Q

how does nuclear fission occur

A

neutron hits the uranium nucleus
uranium nucleus splits into smaller nuclei and some more neutrons
these neutrons hit more uranium nuclei

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7
Q

what do fission neutrons cause

A

cause further fission causing a chain reaction

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8
Q

what are fission neutrons

A

are neutrons released during a reaction during a fission event

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9
Q

what are the fissionable isotopes

A

uranium-235, plutonium-239

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10
Q

what must nuclear power plants contain

A

fissionable isotopes

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11
Q

when the fission come about

A

usually comes about as a result of the heavy nucleus being struck by a slow neutron.

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12
Q

whats a disadvantage of nuclear fission in nuclear fission
whats the danger over time in nuclear fission

A

always highly radioactive. This type of radioactive waste is extremely dangerous and expensive measures
must be taken

The danger is that over time, the containers may leak and cause underground water pollution.
A further danger comes from earthquakes.

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13
Q

whats nuclear fission

A

is the process by which uranium or plutonium nucleus absorbs a slow neutron and splits to produce two more lighter nuclei and several neutrons, together making alot of energy

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