第80页-IGCSE课程-翰林国际教育

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Edexcel IGCSE Physics 复习笔记 7.3.3 Nuclear Reactors

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.3.3 Nuclear Reactors Chain Reactions Only one extra neutron is required to induce a uranium-235 nucleus to split by fission During the fission, it produces t...

Edexcel IGCSE Physics 复习笔记 7.3.2 Nuclear Fission

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.3.2 Nuclear Fission Nuclear Fission Nuclear fission is defined as: The splitting of a large, unstable nucleus into two smaller nuclei Isotopes ...

Edexcel IGCSE Physics 复习笔记 7.3.1 Nuclear Energy

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.3.1 Nuclear Energy Nuclear Energy The nucleus of the atom contains a huge amount of energy – roughly one million times greater than the amount of energy invo...

Edexcel IGCSE Physics 复习笔记 7.2.5 Dangers of Radiation

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.2.5 Dangers of Radiation Dangers of Radiation Ionising radiation can damage human cells and tissues If the atoms that make up a DNA strand are ionised then t...

Edexcel IGCSE Physics 复习笔记 7.2.4 Contamination & Irradiation

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.2.4 Contamination & Irradiation Contamination & Irradiation Contamination Contamination is defined as: The unwanted presence of materials cont...

Edexcel IGCSE Physics 复习笔记 7.2.3 Uses of Radioactivity

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.2.3 Uses of Radioactivity Uses of Radioactivity Radiation is used in a number of different ways: Medical procedures including diagnosis and treatment of canc...

Edexcel IGCSE Physics 复习笔记 7.2.2 Half-Life

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.2.2 Half-Life Half-Life It is impossible to know when a particular unstable nucleus will decay But the rate at which the activity of a sample decreases can b...

Edexcel IGCSE Physics 复习笔记 7.2.1 Activity & Decay

2022-07-22

Edexcel IGCSE Physics 复习笔记 7.2.1 Activity & Decay Activity and Decay Objects containing radioactive nuclei are called sources of radiation Sources of radiation decay at different rat...