Igcse unit 4 - Study guides, Class notes & Summaries
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IGCSE PHYSICS EXAM PREPARATION QUESTIONS AND ANSWERS.
- Exam (elaborations) • 38 pages • 2024
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IGCSE PHYSICS EXAM PREPARATION QUESTIONS AND ANSWERS. 
2 cons of nuclear power? -Answer-1 - risk of meltdown 
2 - difficulty with sorting waste 
 
3 advantages of nuclear power? -Answer-1 - high energy density 
2 - readily available for fluctuations in energy demand 
3 - non-polluting 
 
3 disadvantages of fossil fuels? -Answer-1 - limited supply 
2 - greenhouse gases produced 
3 - burning oil and coal releases sulfur dioxide which forms acid rain (expansive to extract from flue gases) 
 
3 disa...
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IGCSE Unit 4: Operations Management in Business
- Presentation • 239 pages • 2023
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These slides cover Unit 4 Business Studies for IGCSE, and include the below topics: 
 
4 Operations management 
4.1 Production of goods and services 
4.1.1 The meaning of production: 
• Managing resources effectively to produce goods and services 
• Difference between production and productivity 
• Benefits of increasing efficiency and how to increase it, e.g. increasing productivity by automation and technology, improved labour skills 
• Why businesses hold inventories 
• The concept ...
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IGCSE CAIE CHEMISTRY 2023-2025 UNIT 4: ELECTROCHEMISTRY NOTES
- Summary • 11 pages • 2024
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IGCSE CAIE CHEMISTRY UNIT 4: ELECTROCHEMISTRY NOTES 
 
COMPREHENSIVE NOTES ON UNIT 4: ELECTROCHEMISTRY
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Edexcel IGCSE Physics Guaranteed Success
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Edexcel IGCSE Physics Guaranteed Success 
1. Define average speed using the formula. - Average speed (v) = distance (d) / time (t) 
2. What is the standard unit for mass (m)? - The standard unit for mass is the kilogram (kg). 
3. What is the standard unit for distance (d) or displacement (s)? - The standard unit for distance or displacement is the meter (m). 
4. What is the standard unit for speed (s) or velocity (v)? - The standard unit for speed or velocity is meters per second (m/s). 
5....
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IGCSE Biology Unit 1-5 Full Class Notes
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Full class notes for IGCSE Biology from the Pearson Edexcel syllabus. Contains:
Unit 1: The nature and variety of living organisms
Unit 2: Structure and functions in living organisms
Unit 3: Reproduction and Inheritance
Unit 4: Ecology and the environment
Unit 5: Use of biological resources

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iGCSE Edexcel Physics Definitions Already Rated A+
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iGCSE Edexcel Physics Definitions Already Rated A+ 
1. Define acceleration and describe how it changes with time. - Acceleration is the rate at which velocity changes over time. 
2. Explain what air resistance (drag) is in the context of motion. - Air resistance (drag) is the force that opposes the motion of objects moving through air. 
3. What does alternating current (AC) refer to? - Alternating current (AC) is an electric current that changes direction continuously. 
4. What is the purpos...
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Summary Cambridge IGCSE Environmental Management Unit 4 (Water and it's management)
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Summary of the Cambridge IGCSE Environmental Management Coursebook Unit 4 (Water and it's management)
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Physics IGCSE – Electricity Complete Answers
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Physics IGCSE – Electricity Complete Answers 
1. Insulation - Used to prevent electrical shocks when touching a wire. 
2. Circuit Breakers - Break the circuit if the current exceeds a safe limit, using an electromagnet to trip a mechanism. 
3. Earthing - Directs excess current safely to the ground, preventing electric shocks if a live wire becomes 
disconnected. 
4. Double Insulation - Found in appliances like vacuum cleaners with plastic casings, eliminating the need for an earth wire 
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IGCSE Edexcel Physics Electricity
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IGCSE Edexcel Physics Electricity 
1. Define current and state its unit of measurement. - Current is measured in amps (A) and represents the flow of electric charge. 
2. What unit is used to measure charge? - Charge is measured in Coulombs (C), representing the amount of electric charge. 
3. Describe the unit used to measure energy in electrical systems. - Energy in electrical systems is measured in Joules (J). 
4. Define resistance and state its unit. - Resistance is measured in Ohms (Ω) a...
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Physics IGCSE Unit 5 – Pressure Already Graded A+
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Physics IGCSE Unit 5 – Pressure Already Graded A+ 
1. Definition of pressure... - Pressure is the force applied per unit area. 
2. Pressure formula... - Pressure = Force divided by Area (P = F/A). 
3. Units of pressure... - Pressure is measured in Pascals (Pa) or Newtons per square meter (N/m²). 
4. Definition of density... - Density is the amount of mass per unit volume. 
5. Density formula... 
- Density = Mass divided by Volume (d = m/V). 
6. Units of density... - Density is measured...
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