Edexcel IGCSE Maths 复习笔记 5.1.4 Vectors - Modulus
Edexcel IGCSE Maths 复习笔记 5.1.4 Vectors - Modulus What is a vector? Vectors have various uses in mathematics In mechanics vectors represent velocity, acceleration and forces At IGCSE vect...
AQA A Level Biology复习笔记5.3.3 Biomass
Biomass The biomass of an organism (or of a sample of tissue from an organism) is: The mass of living material of the organism or tissue The chemical energy that is stored within the organis...
AQA A Level Biology复习笔记5.3.2 Photosynthetic Products
Photosynthetic Products The process of photosynthesis transfers light energy to chemical energy in biological molecules In ecosystems where sunlight and water is available, the process of ph...
Edexcel IGCSE Maths 复习笔记 5.1.3 Vectors - Proving Things
Edexcel IGCSE Maths 复习笔记 5.1.3 Vectors - Proving Things What are vector proofs? In vector proofs we use vectors, along with a few key ideas, to prove that things are true in geometrical diagram...
AQA A Level Biology复习笔记5.2.9 Investigating the Rate of Respiration
Required Practical: Investigating the Effect on the Rate of Respiration A redox indicator is a substance that changes colour when it is reduced or oxidised DCPIP and methylene blue are redox...
Edexcel IGCSE Maths 复习笔记 5.1.2 Vectors - Finding Paths
Edexcel IGCSE Maths 复习笔记 5.1.2 Vectors - Finding Paths Finding paths in vector diagrams It is important to be able to describe vectors by following paths through a geometric diagram The followi...
Edexcel IGCSE Maths 复习笔记 5.1.1 Vectors - Basics
Edexcel IGCSE Maths 复习笔记 5.1.1 Vectors - Basics What are vectors? A vector is a type of number that has both a size and a direction At GCSE we only deal with two-dimensional vectors, although i...
Edexcel IGCSE Maths 复习笔记 4.18.1 Similarity - Areas & Volumes
Edexcel IGCSE Maths 复习笔记 4.18.1 Similarity - Areas & Volumes What are similar shapes? See Similarity – Lengths and know that: Equivalent areas are linked by an area factor (see below) Equiv...
AQA A Level Biology复习笔记5.2.8 Anaerobic Respiration
Anaerobic Respiration Sometimes cells experience conditions with little or no oxygen There are several consequences when there is not enough oxygen available for respiration: There is no fin...
