Why do river deltas on the Eastern Coastal Plain extend the plain seaward?
Sediment deposition at the river mouth makes a delta extend outward. Exam tip: connect deltas with deposition.
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SubjectsGeography
तटीय मैदान और द्वीप
In this Class 9 Geography topic from Physical Features of India, students explore how India’s coastal plains and islands were formed and how they differ in location, relief, and physical features. They study the Western Coastal Plain along the Arabian Sea and the broader Eastern Coastal Plain along the Bay of Bengal, including important rivers, deltas, lagoons, and coastal processes. The topic also introduces the Andaman and Nicobar Islands and Lakshadweep, highlighting their geographical setting, natural environment, and importance to India.
TOPIC PRACTICE
Up to 20 questions from this page. Select your focus, then start.
Sediment deposition at the river mouth makes a delta extend outward. Exam tip: connect deltas with deposition.
View question detailsWestern Ghats are very close to the sea, so the plain is narrow. Exam tip: treat mountain coast distance as the main clue.
View question detailsLarge rivers form wide deltas on the eastern coast. Exam tip: link eastern coast with river deposition.
View question detailsAn estuary is strongly influenced by sea tides. Exam tip: use Narmada and Tapi as examples.
View question detailsThe western coast sequence from north to south is Konkan, Kanara and Malabar. Exam tip: remember it with a map.
View question detailsKonkan Coast is linked with the northern part of the western coastal plain. Exam tip: connect Konkan with the Mumbai Goa region.
View question detailsBackwaters are calm water bodies behind coastal barriers. Exam tip: connect Kerala with backwaters.
View question detailsNorthern Circar is the northern part of the eastern coast. Exam tip: remember it with the Mahanadi Krishna region.
View question detailsCoromandel Coast is considered the southern part of the eastern coast. Exam tip: connect it with the Tamil Nadu coast.
View question detailsNarmada and Tapi form estuaries on the western coast. Exam tip: do not confuse their mouths with deltas.
View question detailsLong rivers bring more sediment and deposit it at the mouth. Exam tip: connect deltas with river length and deposition.
View question detailsSundarbans is a mangrove region in the Ganga Brahmaputra delta. Exam tip: remember delta and mangroves together.
View question detailsChilika Lake is a large brackish-water coastal lagoon on the Odisha coast. A lagoon is a shallow water body separated from the sea partly by a sand bar, barrier, or coastal deposits, while remaining connected with the sea in some way. Chilika’s coastal setting and its connection with marine water make “coastal lagoon” the correct classification. Therefore, option D is correct. It is not a glacial lake, coral island, or volcanic crater.
The important clue is the location and form of Chilika. It lies beside the Bay of Bengal and is separated from the open sea by a sandy barrier, creating a broad shallow lagoon. Its water can contain both freshwater influences and saltwater influences, so it is often described as brackish. The question asks for strict geographical classification, and D gives the precise landform type. The supplied answer and explanation are accurate.
Sediment makes waterways shallow and obstructs navigation. Exam tip: remember the importance of deep water for ports.
View question detailsLakshadweep is a coral origin island group. Exam tip: connect it with coral islands of the Arabian Sea.
View question detailsCoral reefs can be affected quickly by heat, pollution and human pressure. Exam tip: treat coral as a sensitive ecology.
View question detailsThe geological origin of Andaman Nicobar is different from coral Lakshadweep. Exam tip: keep origins of both island groups separate.
View question detailsBarren Island is a major active volcanic example of India. Exam tip: connect it with the Andaman region.
View question detailsIndira Point in the Nicobar Islands is India's southernmost point. Exam tip: remember it as an extreme point.
View question detailsCyclones from the Bay of Bengal affect the eastern coast more. Exam tip: treat the eastern coast as cyclone-prone.
View question detailsQUIZ COMPLETE