Test: Oceans and Continents - 2 - Class 6 MCQ

The oceans are the main component of the Earth's water cycle. They cover about three-fourths of the Earth's surface and store most of the planet's water. Water from the oceans evaporates, forms clouds, and then falls back to the Earth as rain or snow. This continuous movement of water between the oceans, atmosphere, and land is called the water cycle. Without the oceans, this cycle would not work, and there would be no rainfall.

Antarctica is the continent located at the bottom of the Earth when viewed from space. It is situated around the South Pole and is covered almost entirely by ice. This icy continent is the coldest, windiest, and driest on Earth, and it plays an important role in regulating the planet's climate by reflecting sunlight with its vast ice sheets.

India established the scientific base station 'Dakshin Gangotri' in Antarctica in 1983 as part of its exploration and research program. It was India's first permanent research station in Antarctica, used to study the environment, climate, and other scientific phenomena. This demonstrates India's active participation in Antarctic research and its commitment to understanding global environmental changes.

Topic in NCERT: Indian Antarctica Programme

Line in NCERT: "In 1983, India established its first scientific base station there, called ‘Dakshin Gangotri’."

The monsoon rains we in India expect every summer originate in the ocean — without such rains, our agriculture and all life will suffer.

The Andaman and Nicobar Islands are located in the Bay of Bengal. This group of islands is part of India and consists of hundreds of islands. These islands are known for their natural beauty, diverse marine life, and tropical forests.

Topic in NCERT: Islands

Line in NCERT: "India has more than 1,300 small islands! Those include two major groups - Andaman and Nicobar Islands in the Bay of Bengal and Lakshadweep Islands in the Arabian Sea."

In Vedic tradition, Varuna is the deity associated with the oceans, water bodies, and the cosmic order. Varuna is often invoked for blessings and protection, particularly related to water and the seas. The Indian Navy’s motto, "Sam noh Varunah", which means "Be auspicious to us, O Varuna," is a tribute to this Vedic deity.

Topic in NCERT: Invocation to Varuṇa

Line in NCERT: "This is an invocation to Varuṇa, a Vedic deity associated with the oceans, the sky, and water in general."

Australia is the smallest continent by land area. It is unique because it is both a continent and a country. Despite its smaller size compared to other continents, it is known as the "island continent" because it is surrounded entirely by water.

The Indian Navy's motto, "Sam noh Varunah", translates to "Be auspicious to us, O Varuna." It is a tribute to Varuna, the Vedic deity associated with the oceans and water bodies. The motto reflects the Indian Navy’s invocation for protection and blessings over the seas.

Topic in NCERT: The emblem of the Indian Navy

Line in NCERT: "The emblem of the Indian Navy contains the motto Sam noh Varunah (pronounced 'Sham no Varunah'), which means, 'Be auspicious to us, O Varuna.'"

Five oceans are commonly recognized: the Pacific Ocean, Atlantic Ocean, Indian Ocean, Arctic Ocean, and Southern (or Antarctic) Ocean.

Topic in NCERT: Oceans and Continents

Line in NCERT: "On the world map in Fig. 2.3 on page 32, we can observe five oceans the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Arctic Ocean and the Southern (or Antarctic) Ocean."

World Oceans Day is celebrated every year on June 8. It is a day to raise awareness about the importance of oceans, their role in sustaining life, and the need to protect them from threats like pollution and overfishing.

Topic in NCERT: World Oceans Day

Line in NCERT: "The United Nations has designated June 8 as World Oceans Day"