Edexcel IGCSE Physics 复习笔记 8.2.1 Classification of Stars
Edexcel IGCSE Physics 复习笔记 8.2.1 Classification of Stars Classification of Stars Stars come in a wide range of sizes and colours, from yellow stars to red dwarfs, from blue giants to red...
Edexcel IGCSE Physics 复习笔记 8.1.4 Orbital Period
Edexcel IGCSE Physics 复习笔记 8.1.4 Orbital Period Calculating Orbital Period When planets move around the Sun, or a moon moves around a planet, they orbit in circular motion This means tha...
Edexcel IGCSE Physics 复习笔记 8.1.3 Orbital Motion
Edexcel IGCSE Physics 复习笔记 8.1.3 Orbital Motion Orbital Motion There are many orbiting objects in our solar system and they each orbit a different type of planetary body Orbiting ...
Edexcel IGCSE Physics 复习笔记 8.1.2 Gravitational Field Strength
Edexcel IGCSE Physics 复习笔记 8.1.2 Gravitational Field Strength Gravitational Field Strength The strength of gravity on different planets after an object's weight on that planet Weight is ...
Edexcel IGCSE Physics 复习笔记 8.1.1 Objects in Space
Edexcel IGCSE Physics 复习笔记 8.1.1 Objects in Space Planets, Stars & Galaxies The Universe is is a large collection of billions of galaxies It is also the name given to the entirety o...
Edexcel IGCSE Physics 复习笔记 7.3.5 The Conditions for Fusion
Edexcel IGCSE Physics 复习笔记 7.3.5 The Conditions for Fusion Fusion in Stars Stars are huge balls of (mostly) hydrogen gas In the centre of star, hydrogen atoms undergo nuclear fusion to f...
Edexcel IGCSE Physics 复习笔记 7.3.4 Nuclear Fusion
Edexcel IGCSE Physics 复习笔记 7.3.4 Nuclear Fusion Nuclear Fusion Small nuclei can react to release energy in a process called nuclear fusion Nuclear fusion is defined as: When two l...
Edexcel IGCSE Physics 复习笔记 7.3.3 Nuclear Reactors
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
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 ...
