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Earthquake and Volcanoes

Gujarat Board · Class 11 · Geography

Complete topic list for Earthquake and Volcanoes in Gujarat Board Class 11 Geography. Key concepts, sub-topics, and what to focus on for board exams.

42 questions20 flashcards5 concepts

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4 Topics · Gujarat Board Class 11 Geography

Topics in Earthquake and Volcanoes

1

Earth Movements and Introduction

  • Earth's interior contains great heat and pressure from overlying rock layers
  • Heat and pressure changes cause expansion/contraction in rock matter
  • Earth movements can be slow or sudden
2

Earthquake Fundamentals

  • Earthquake: Wave-like vibrations from disturbance in rocks within Earth's interior
  • Occur suddenly, accidentally, and rapidly
  • Example: Bhuj earthquake (26 January 2001) caused devastation in minutes
3

Seismology and Seismic Waves

  • Seismology: Science studying earthquakes (from Greek 'Seismos')
  • Seismograph: Instrument measuring earthquake intensity with hanging pendulum
  • Indian seismograph centers: Mumbai, Kolkata, Delhi, Dehradun, Hyderabad, Rajkot, Vadodara, Gandhinagar
4

Causes of Earthquakes

  • Six main causes: Faulting, Volcanic eruption, Isostasy, Water vapor, Human activities, Natural events
  • Faulting: Most common cause due to tectonic movements creating tension/compression
  • Volcanic eruption: Strong earthquakes within 150-200 km of volcano

Key Concepts

Movements in Earth's crust caused byFocus is the point inside EarthThree types of wavesSeismology is the scientific studySix main causes

Frequently Asked Questions

What are the important topics in Earthquake and Volcanoes for Gujarat Board Class 11 Geography?
Earthquake and Volcanoes covers several key topics that are frequently asked in Gujarat Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Earthquake and Volcanoes — Gujarat Board Class 11 Geography?
Understand the core concepts first, then work through the 42 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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