Edexcel IGCSE Physics 复习笔记 8.3.1 The Big Bang Theory
Edexcel IGCSE Physics 复习笔记 8.3.1 The Big Bang Theory The Big Bang Theory Around 14 billion years ago, the Universe began from a very small region that was extremely hot and dense Then th...
Edexcel IGCSE Physics 复习笔记 8.2.5 Hertzsprung-Russell Diagrams
Edexcel IGCSE Physics 复习笔记 8.2.5 Hertzsprung-Russell Diagrams Hertzsprung-Russell Diagrams Stars are classified using the Hertzsprung-Russell (HR) diagram This is a plot of: The luminosi...
Edexcel IGCSE Physics 复习笔记 8.2.4 The Brightness of Stars
Edexcel IGCSE Physics 复习笔记 8.2.4 The Brightness of Stars Absolute Magnitude Astronomers measure the brightness of stars at a standard distance using the absolute magnitude scale This is ...
Edexcel IGCSE Physics 复习笔记 8.2.3 The Life Cycle of Larger Stars
Edexcel IGCSE Physics 复习笔记 8.2.3 The Life Cycle of Larger Stars The Life Cycle of Larger Stars A large star is one that is much larger than the Sun Stars that are larger than the Sun hav...
Edexcel IGCSE Physics 复习笔记 8.2.2 The Life Cycle of Solar Mass Stars
Edexcel IGCSE Physics 复习笔记 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 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 ...
