Fission And Fusion
Gbogbo ọrọ náà
Burning coal releases the energy stored in chemical bonds between atoms. Nuclear reactions reach far deeper, into the nucleus itself, and release something like a million times more energy from the same mass of fuel. Two quite different nuclear processes do this, and confusing them is the classic error in this topic.
This lesson separates them properly. Fission splits one heavy nucleus into two lighter ones and runs every nuclear power station on Earth. Fusion joins light nuclei together and powers every star in the sky. You will meet the chain reaction, the job of the control rods and the shielding, and the reason fusion is so much harder to achieve on Earth than in the Sun.
Ebumnobi
- Know that nuclear reactions, including fission, fusion and radioactive decay can be a source of energy
- Understand how a nucleus of U-235 can be split (the process of fission) by collision with a neutron, and that this process releases energy as kinetic energy of the fission products
- Know that the fission of U-235 produces two radioactive daughter nuclei and a small number of neutrons
- Understand the role of shielding around a nuclear reactor
- Know that fusion is the energy source for stars
Akọmọ Ojú-ẹkọ
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Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Fission And Fusion. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Nuclear fission is best described as: A) Two light nuclei joining together B) A large nucleus splitting into two smaller nuclei C) A nucleus emitting an alpha particle D) An electron being knocked out of an atom Answer: B
- Which process is the energy source of the Sun? A) Fission of uranium B) Burning of hydrogen C) Fusion of hydrogen nuclei D) Radioactive decay of radon Answer: C
- What starts the fission of a uranium-235 nucleus? A) The absorption of a neutron B) The emission of a gamma ray C) Heating the fuel rod D) The absorption of an electron Answer: A
- In a reactor, the purpose of the control rods is to: A) Slow the neutrons down B) Absorb neutrons C) Absorb gamma radiation D) Increase the fuel temperature Answer: B
- Most of the energy released in a fission reaction appears as: A) Kinetic energy of the fission products B) Sound energy C) Light from the fuel rods D) Electrical energy in the core Answer: A
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Fission And Fusion? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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