Edexcel IGCSE Physics 復習筆記 8.2.2 The Life Cycle of Solar Mass Stars The Life Cycle of Solar Mass Stars 1. Nebula All stars form from a giant cloud of?hydrogen gas?and?dust?called a?nebul...
Edexcel IGCSE Physics 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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 復習筆記 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...
