Edexcel IGCSE Physics: Double Science 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 moti...
Edexcel IGCSE Physics: Double Science 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...
Edexcel IGCSE Physics: Double Science 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...
Edexcel IGCSE Physics: Double Science 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...
Edexcel IGCSE Physics: Double Science 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?nu...
Edexcel IGCSE Physics: Double Science 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: ...
Edexcel IGCSE Physics: Double Science 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 fissi...
Edexcel IGCSE Physics: Double Science 復習筆記：7.3.2 Nuclear Fission Nuclear Fission Nuclear fission is defined as: The splitting of a large, unstable nucleus into two smaller nuclei...
Edexcel IGCSE Physics: Double Science 復習筆記：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 amou...
