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Distribution of Oceans and Continents

Tripura Board · Class 11 · Geography

Quick revision notes for Distribution of Oceans and Continents — Tripura Board Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

64 questions22 flashcards5 concepts

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Key Topics to Revise

1

Continental Drift Theory

  • Alfred Wegener proposed Continental Drift Theory in 1912
  • Pangaea - supercontinent meaning 'all earth'
  • Panthalassa - mega ocean meaning 'all water'
2

Evidence for Continental Drift

  • Jig-saw fit: Coastlines of Africa and South America match perfectly
  • Rock formations: 2000 million year old rocks from Brazil match with Western Africa
  • Tillite deposits: Gondwana system sediments found across six southern landmasses
3

Forces Behind Continental Drift

  • Wegener proposed two forces: pole-fleeing force and tidal force
  • Pole-fleeing force due to Earth's rotation and equatorial bulge
  • Tidal force due to gravitational attraction of moon and sun
4

Ocean Floor Configuration

  • Ocean floor has three major divisions: continental margins, deep-sea basins, mid-ocean ridges
  • Continental margins include shelf, slope, rise, and deep-oceanic trenches
  • Mid-oceanic ridges are longest mountain chains on Earth (submerged)

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Full Notes

Key Concepts

Proposed by Alfred Wegener in 1912Multiple types of evidence support continentalProposed by Harry Hess in 1961Developed in 1967 by McKenzieThree types exist

Frequently Asked Questions

What are the important topics in Distribution of Oceans and Continents for Tripura Board Class 11 Geography?
Distribution of Oceans and Continents covers several key topics that are frequently asked in Tripura 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 Distribution of Oceans and Continents — Tripura Board Class 11 Geography?
Understand the core concepts first, then work through the 64 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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