Oceans and Continents

About this chapter

This Class 6 Social Science chapter introduces the Earth as the 'blue planet', whose surface is almost three-fourths water and a little over one-fourth land. Students learn that the largest water bodies are oceans and large continuous expanses of land are continents. The chapter names the five oceans — Pacific (largest), Atlantic, Indian, Southern and Arctic (smallest) — and explains that their map boundaries are mere conventions. It explores how oceans and land are unevenly spread between the hemispheres, the Indian Ocean's Arabian Sea and Bay of Bengal, and India's island groups (Andaman & Nicobar, Lakshadweep). It covers ocean-borne disasters like cyclones and the 2004 tsunami, the National Disaster Management Authority, why continents are counted from four to seven (commonly seven), Eurasia, Greenland the largest island, Antarctica, and marine flora and fauna. CTET tests definitions, ocean order, map facts, continent counts and cause-effect. The four tests are: Practice — recall; Quiz — application; Hard — PYQ-style statement and assertion-reason items; Mastery — full-chapter mixed mock.