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Science — Third Preparatory
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Science — Third Preparatory
Science — Third Preparatory
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Unit 1 — Chemical Reactions and Their Environmental Impacts
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Question bank: Unit 1 — Chemical Reactions and Their Environmental Impacts
40 questions
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Unit 2 — Electricity and Magnetism
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Question bank: Unit 2 — Electricity and Magnetism
40 questions
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Unit 3 — Variation of Traits in Living Organisms
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Question bank: Unit 3 — Variation of Traits in Living Organisms
40 questions
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Unit 4 — Dating Planet Earth
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1.1 How do we know that dinosaurs lived millions of years ago?
1.2 What is a fossil and how does it form?
1.3 Types of fossils
1.4 The fossil record
1.5 The importance of the fossil record
1.6 Causes of the diversity of life forms through time
1.7 Comparative anatomy
1.8 Summary of Lesson 1
2.1 How old is Earth?
2.2 The geologic time scale
2.3 Reading Earth's history from rocks and fossils
2.4 Determining the age of rocks
2.5 Relative age
2.6 Absolute age
2.7 Comparing relative and absolute dating
2.8 Exploiting resources and extinction (issue)
2.9 Summary of Lesson 2
How a fossil forms, step by step
How to read a rock column (relative dating)
Choosing a dating method
Half-life calculation recipe
Common mistakes
📌 Comprehensive Scientific Terminology & Definitions:
⚖️ Governing Scientific Laws, Principles & Mathematical Formulas:
🔍 In-Depth Explanations, Deductions & Core Concepts:
📊 Common Radioactive Isotopes Used in Absolute Geological Dating:
💡 High-Yield Exam Traps & Key Takeaways:
Question bank: Unit 4 — Dating Planet Earth
40 questions
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Science — Third Preparatory 2026/2027
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Unit 1 — Chemical Reactions and Their Environmental Impacts
Text lesson
Preview
Unit 2 — Electricity and Magnetism
Text lesson
Preview
Unit 3 — Variation of Traits in Living Organisms
Text lesson
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Unit 4 — Dating Planet Earth
Text lesson
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Unit 1 - Force, Motion, Acceleration and Physical Quantities
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Lesson 2 - Light Energy, Spherical Mirrors, Lenses and Vision Defects Correction
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Text lesson
Unit 4 — Dating Planet Earth
Science — Third Preparatory
Unit 4 — Dating Planet Earth
Explanation
Question bank
2.8 Exploiting resources and extinction (issue)
2.8 Exploiting resources and extinction (issue)
Human exploitation of natural resources, such as hunting and destroying habitats, can cause species to die out much faster than natural processes.
Studying past mass extinctions helps us understand the risks today.
Unit 4 — Dating Planet Earth · 17 / 28
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