Chapter 1 of 11
Revision Notes
Overview of the Environment Around Us — Revision Notes
ICSE · Class 9 · Environmental Science
Overview of the Environment Around Us revision notes for ICSE Class 9 Environmental Science: 4 topics in quick points.
57 questions48 flashcards5 concepts
Interactive on Super Tutor
Studying Overview of the Environment Around Us? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.
Free trial, no card needed.
Key Topics to Revise
1
1. Environment: Meaning and Scope
- The term environment is derived from the French word environ, meaning to surround.
- Environment includes natural elements such as air, water, land, climate, plants, and animals, as well as human-made surroundings such as settlements and industries.
- The scope of the environment includes physical environment, biological environment, human environment, natural resources, and ecosystems.
2
2. Earth as a Life-Supporting Planet
- Earth is described as a life-supporting planet because it has a unique combination of physical, chemical, and biological conditions.
- Earth functions as a living system due to continuous interaction among land, water, air, and living organisms.
- The Earth system includes lithosphere, hydrosphere, atmosphere, cryosphere, and biosphere.
3
3. Major Components of the Environment
- Lithosphere is the outer solid layer of the Earth, consisting of the crust and the uppermost part of the mantle.
- Lithosphere includes continents, mountains, plateaus, plains, and the soil layer.
- It provides the physical base for terrestrial life and supports agriculture, settlements, minerals, and fossil fuels.
4
4. Interaction Between Biotic and Abiotic Components
- The environment functions as a living system because biotic and abiotic components continuously interact.
- Abiotic components are non-living physical and chemical factors such as air, water, soil, sunlight, temperature, and minerals.
- Biotic components are living organisms such as plants, animals, human beings, bacteria, and fungi.
Get complete notes with diagrams and examples
Full NotesKey Concepts
Environment includes all external conditionsEarth is the only known planetEarth revolves around the Sun atWater is known as the universalThe atmosphere is the envelope
Frequently Asked Questions
What are the important topics in Overview of the Environment Around Us for ICSE Class 9 Environmental Science?
Key topics in Overview of the Environment Around Us include Environment: Meaning and Scope, Earth as a Life-Supporting Planet, Major Components of the Environment, Interaction Between Biotic and Abiotic Components. Study these first, then practise questions on each for Class 9 exams.
How should I revise Overview of the Environment Around Us for Class 9 exams?
Learn the core ideas first, then work through the 57 practice questions on Overview of the Environment Around Us. 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.
More resources for Overview of the Environment Around Us
For serious students
Get the full Overview of the Environment Around Us chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for ICSE Class 9 Environmental Science. Free to start, no card needed.