Page 225 - Physics Form 5 KSSM_Neat

In a nuclear reactor, the fission of uranium-235 nucleus produces two daughter nuclei, three CHAPTER 6
fast moving neutrons and releases a large amount of energy. These neutrons will bombard other
uranium nuclei and release more neutrons through continuous nuclear fission. These continuous
reactions is known as a chain reaction. Figure 6.13 shows the chain reaction of uranium-235. Nuclear Physics

SCAN ME 92 Kr 1 n
SCAN ME
36
Video of a chain 0
reaction in the 1 nYSIA
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core of a nuclear Energy 0
KEMENTERIAN PENDIDIKAN MALA
reactor 141 1
http://bit.ly/ChaRea8 92 Kr 56 Ba 0
36 1 235 92 1
n 92 U Kr n
0 36 0
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Neutron 0
1
1 n 235 0 n 235 U 141 1 n
0 92 U 92 56 Ba 0
141
Ba
56 92 1 n
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235 1
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Figure 6.13 Chain reaction of uranium-235
The chain reaction that takes place in the reactor core needs to be controlled. The reactor needs
to have a structure which can prevent the leakage of radioactive radiation to the surroundings.
How can we control the energy produced during the chain reaction and ensure that a nuclear
reactor is safe for electricity generation?

Activity 6.7 ISS ICS

Aim: To discuss a chain reaction and ways to control the energy produced in a nuclear reactor

Instructions:
1. Carry out a Talk Partners activity.
2. Scan the QR code given or refer to the reading resources to obtain information on chain
reactions and ways of controlling energy produced in a nuclear reactor core.
3. Based on the information obtained: SCAN ME
SCAN ME
(a) write the equation for the fission of a uranium-235 nucleus Video on ways of
when it is bombarded by a neutron controlling
(b) discuss ways of controlling the energy produced during a energy in a
chain reaction in a nuclear reactor. nuclear reactor
4. Present your findings. http://bit.ly/3Vid215

LS 6.2.4 215