Class 9 Social Science - KERALA
Physical Features of India
The chapter 'Physical Features of India' in Class 9 Social Science explores the diverse physical landscape of the country, ranging from the towering Himalayan mountains in the north to the vast Northern Plains, the rugged Peninsular Plateau, the Indian Desert, the Coastal Plains, and the island groups. Students learn about the theory of Plate Tectonics and how these varied landforms were formed through geological processes. This chapter is extremely important for Kerala SCERT board exams as it forms the basis of Indian geography, frequently featuring map-marking questions, physical divisions comparisons, and short-answer questions.
Start Learning FreeKey Concepts
Theory of Plate Tectonics
The Earth's crust has been broken into seven major and minor pieces called tectonic plates, whose movement causes folding, faulting, and volcanic activity.
The Himalayan Mountains
Geologically young and structurally fold mountains that stretch over the northern borders of India, consisting of three parallel ranges: Greater Himalayas, Lesser Himalayas, and Shiwaliks.
The Northern Plains
Formed by the interplay of three major river systems—the Indus, the Ganga, and the Brahmaputra—these plains are rich in alluvial soil, making them agriculturally very productive.
The Peninsular Plateau
A tableland composed of the old crystalline, igneous, and metamorphic rocks, broadly divided into the Central Highlands and the Deccan Plateau.
Coastal Plains and Islands
Narrow strips of plain land flanking the Peninsular plateau, bordered by the Arabian Sea and Bay of Bengal, along with the Lakshadweep and Andaman & Nicobar island groups.
Important Formulas
Board Exam Info
In Kerala SCERT Class 9 Social Science exams, this chapter typically carries around 6 to 8 marks. Questions often include locating physical divisions on an outline map of India, differentiating between physical features like the Eastern and Western Ghats, or explaining the formation of the Northern Plains.
Frequently Asked Questions
Himadri is the northernmost and loftiest mountain range made of granite, whereas Shiwalik is the outermost, southernmost foothill range composed of unconsolidated sediments.
Himadri is the northernmost and highest mountain range containing eternal snow peaks, while the Shiwalik is the southernmost foothill range composed of unconsolidated sediments.
They were formed by the deposition of silt and alluvial soil brought down by three major river systems: the Indus, Ganga, and Brahmaputra over millions of years.
They were formed by the alluvial deposits brought down by the three major river systems—Indus, Ganga, and Brahmaputra—filling a massive basin over millions of years.
It is a part of the ancient Gondwana landmass that broke apart and drifted, making it one of the most stable and oldest landmasses made of crystalline rocks.
It is a part of the ancient Gondwana landmass that broke and drifted, making it one of the oldest stable landmasses formed by volcanic activity and intense metamorphism.
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