Page 4 - Ranger PT3 2022 science

2.4 Role of Humans in Maintaning
CHAPTER 8 Light and Optics 89 a Balanced Nature 133

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8.1 The Use of Mirrors 90 CHAPTER
8.2 Properties of Light 92 3 Nutrition 134
8.3 Reflection of Light 93 3.1 Classes of Food 135
8.4 Refraction of Light 94 3.2 Importance of a Balanced
8.5 Dispersion of Light 96 Diet 137
8.6 Scattering of Light 97 3.3 Human Digestive System 139
8.7 Addition and Subtraction 3.4 Process of Absorption and
of Light 99 Transportation of Digested
Food and Defaecation 141
CHAPTER 9 Earth 103
CHAPTER 4 Human Health 144

9.1 The System and Structure
of the Earth 104 4.1 Infectious and Non-infectious
9.2 Composition of the Earth 108 Diseases 145
9.3 Main Processes of the Earth 109 4.2 Body Defence 148
9.4 Geohazard Phenomena 111
9.5 Age of Earth 115 CHAPTER 5 Water and Solution 151
9.6 Earth’s Resources and
Applied Geology 117 5.1 Physical Characteristics of
Water 152
Form 2 5.2 Solution and Rate of
Solubility 155
5.3 Water Purification and
CHAPTER 1 Biodiversity 120 Water Supply 158

1.1 Diversity of Organisms 121 CHAPTER 6 Acid and Alkali 160
1.2 Classification of Organisms 122
6.1 Properties of Acids and
161
Alkalis
CHAPTER 2 Ecosystem 126 6.2 Neutralisation 165

2.1 Energy Flow in an Ecosystem 127 CHAPTER
2.2 Nutrient Cycles in an 7 Electricity and
Ecosystem 128 Magnetism 167
2.3 Interdependence and 7.1 Electricity 168
Interaction among Organisms, 7.2 Flow of Electric Current in
and between Organisms and a Series Circuit and Parallel
the Environment 129 Circuit 174

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00 Content Ranger PT3 Sc.indd 3 25/03/2022 3:25 PM