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GCSE Physics > 20.1 Nuclear Fission > Flashcards

20.1 Nuclear Fission Flashcards

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0
Q

What is nuclear fission?

A

The nucleus of an atom of a fissionable substance splits into two smaller fragment nuclei due to absorbing a neutron.

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1
Q

How is energy released in a nuclear reactor?

A

As a result of nuclear fission

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2
Q

What is released during fission?

A

Two or three fission neutrons

Energy in the form of radiation

Kinetic energy

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3
Q

What do the neutrons released in fission do?

A

Cause other fissionable nuclei to split, causing a chain reaction of events

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4
Q

What is the case in a nuclear fission reactor due to neutrons?

A

On average one fission neutron from each event goes on to produce further fission. This causes energy to be released at. Steady rate

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5
Q

Fissionable isotopes are what?

A

Uranium-235 and plutonium-239

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6
Q

What is inside a nuclear reactor?

A

Uranium fuel rods spaced evenly in the core. SEE FIGURE 4 p223 TEXTBOOK

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GCSE Physics (3 decks)

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