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Revision Notes
Technological Evolution and Models — Revision Notes
ICSE · Class 11 · Environmental Science
Technological Evolution and Models revision notes for ICSE Class 11 Environmental Science: 4 topics in quick points.
65 questions40 flashcards5 concepts
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Key Topics to Revise
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1. Technology and Its Evolution
- Technology includes tools, machines, methods, systems, and energy sources used to meet human needs.
- Technology is not limited to modern gadgets or computers.
- Early technology used stone, wood, and bone, while later stages used metal, steam, electricity, and digital systems.
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2. Stages in the Evolution of Technology
- During the Palaeolithic Age, people used simple tools made from stone, wood, and bone.
- Fire was a major breakthrough in the Palaeolithic stage.
- Palaeolithic technology was low-tech, labour-intensive, and closely linked to survival.
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3. Impact of Technology on Human Societies
- Technology has social, economic, political, cultural, and environmental effects.
- Social benefits include better housing, sanitation, transport, healthcare, and access to education.
- Social problems include isolation, privacy concerns, and the digital divide.
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4. Hi-tech, Low-tech, and Intermediate Technology
- Hi-tech is advanced, modern, complex technology based on cutting-edge scientific research.
- Hi-tech is capital-intensive, highly skilled, and dependent on digital systems and AI.
- Hi-tech examples include robotics and automation, space technology, AI, and biotechnology.
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Full NotesKey Concepts
Technology is the practical applicationTechnological development moved through major stagesEarly humans used stoneAgriculture and domestication of animals allowedSocieties developed improved agricultural tools
Frequently Asked Questions
What are the important topics in Technological Evolution and Models for ICSE Class 11 Environmental Science?
Key topics in Technological Evolution and Models include Technology and Its Evolution, Stages in the Evolution of Technology, Impact of Technology on Human Societies, Hi-tech, Low-tech, and Intermediate Technology. Study these first, then practise questions on each for Class 11 exams.
How should I revise Technological Evolution and Models for Class 11 exams?
Learn the core ideas first, then work through the 65 practice questions on Technological Evolution and Models. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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