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Revision Notes

Human Impact on Environment

NIOS · Class 10 · Science & Tech

Quick revision notes for Human Impact on Environment — NIOS Class 10 Science & Tech. Key concepts, formulas, and definitions for last-minute revision.

44 questions44 flashcards5 concepts

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An infographic comparing and contrasting natural environmental problems (like earthquakes, floods, cyclones) and man-made environmental problems (like pollution, deforestation), highlighting their cau
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Key Topics to Revise

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1. Environmental Problems and Natural Disasters

  • Environmental problems arise due to natural processes and human activities.
  • A disaster may be natural or manmade, and it causes large-scale damage to life and property.
  • Environmental problems are broadly grouped into natural and manmade categories.
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2. Floods, Cyclones, Earthquakes, Tsunami, Landslides, and Cloudburst

  • India is one of the most flood-prone countries because of many rivers and a tropical climate.
  • On average, 75 lakh hectares of land is affected by floods annually in India.
  • Floods occur due to heavy rainfall, poor drainage, and inadequate river capacity to contain excess water.
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3. Forests, Deforestation, and Forest Fire

  • Forest cover of India is 19.27% corresponding to 63.3 million hectares.
  • Forest fire can be natural or controlled, caused by heat in dry litter, or caused by human negligence.
  • Natural or controlled forest fire may occur when lightning strikes dry trees.
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4. Pollution and Its Types

  • Pollution is any undesirable change in the environment due to human activity.
  • Pollution may affect air, water, land, and noise quality.
  • Air pollution, water pollution, land pollution, and noise pollution are the main types.

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Full Notes

Key Concepts

Natural disasters are harmful events causedFloods happen when rivers or drainageCyclones are intense lowEarthquakes are sudden shocks or shakingForest fires may be natural

Frequently Asked Questions

What are the important topics in Human Impact on Environment for NIOS Class 10 Science & Tech?
Key topics in Human Impact on Environment include Human Impact on Environment - Concept Overview, Human Impact on Environment - Complete Chapter Overview, Human Impact on Environment - Concept Overview. These are the concepts NIOS Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Human Impact on Environment — NIOS Class 10 Science & Tech?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and 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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