Ncert class 6 Geography chapter 2 oceans and continents

 Ncert class 6 geography chapter 2 oceans and continents mcq quiz is very useful for nmms students and ap dsc, ap tet, ts tet, ctet and also other compititive exams are appsc, rrb, ssc, upsc etc.,

Oceans and Continents

 

1.Approximately how much of the Earth's surface is covered by water?

A) Almost three-fourths
B) Exactly half
C) About one-fourth
D) Nearly nine-tenths

ANSWER= (A) Nearly three-fourths
Explain:- Oceans and smaller water bodies cover roughly three-fourths of the terrestrial surface, giving Earth its distinctive appearance from space.

 

2.Why did early astronauts lovingly refer to Earth as the 'blue planet'?

A) Blue algae cover all the landmasses across the continents.
B) Sunlight reflecting off vast expanses of surface water makes it appear blue from space.
C) The planet's atmosphere is composed entirely of ocean water vapor.
D) Ice sheets covering the poles reflect blue light into space.

ANSWER= (B) Sunlight reflecting off vast expanses of surface water makes it appear blue from space.
Explain:- Because water covers almost three-fourths of the Earth's surface, the vast oceans reflect light, giving the globe a predominantly blue appearance from space.

 

3.The emblem of the Indian Navy contains the motto Śham no Varuṇah ('Sam noh Varunah'), which invokes which deity?

A)Vayu, a deity associated with winds and storms
B) Agni, a deity associated with fire and protection
C) Varuna, a deity associated with oceans, the sky, and water
D) Indra, a deity associated with thunder and warfare

ANSWER= (C) Varuna, a deity associated with oceans, the sky, and water
Explain:- Varuna is a Vedic deity associated with the oceans, sky, and water, making this invocation fitting for naval maritime tradition.

 

4.How are oceans and landmasses distributed between the Earth's Northern and Southern Hemispheres?

A) Both hemispheres have equal proportions of land and ocean area.
B) The Southern Hemisphere contains significantly more land than water.
C) The Northern Hemisphere is covered almost entirely by oceans with virtually no continuous landmass.
D) The Northern Hemisphere contains a larger proportion of land than the Southern Hemisphere.

ANSWER= (D) The Northern Hemisphere contains a larger proportion of land than the Southern Hemisphere
Explain:- Polar and global maps demonstrate that landmasses are predominantly situated in the Northern Hemisphere, while the Southern Hemisphere is overwhelmingly aquatic.

 

5.Where is most of the Earth's small percentage of freshwater stored?

A) Open ocean basins and deep ocean trenches
B) Glaciers, rivers, lakes, the atmosphere, and groundwater
C) Coastal seas, bays, and gulfs
D) Saline wetlands and coral reef systems

ANSWER= (B) Saline wetlands and coral reef systems
Explain:- Freshwater accounts for a very small fraction of Earth's total water and is contained in glaciers, surface bodies like rivers and lakes, underground aquifers, and atmospheric vapor.

 

6.In marine biology, how are marine flora distinguished from marine fauna?

A)Marine flora refers to plant life such as algae and seaweeds, while marine fauna refers to animal life like fish and whales.
B) Marine flora refers to extinct marine organisms, while marine fauna refers to living sea creatures.
C) Marine flora consists of large deep-sea mammals, while marine fauna consists of surface microscopic plankton.
D) Marine flora includes all saltwater fish species, while marine fauna includes coastal mangrove vegetation.

ANSWER= (A) Marine flora refers to plant life such as algae and seaweeds, while marine fauna refers to animal life like fish and whales.</
Explain:- Flora is the general term for plant life in a region (e.g., algae and seaweeds), whereas fauna designates animal life (e.g., fish, turtles, and marine mammals).

 

7.Which of the following is the largest ocean on Earth?

A) Arctic Ocean
B) Atlantic Ocean
C) Pacific Ocean
D) Indian Ocean

ANSWER= (C) Pacific Ocean
Explain:- The Pacific Ocean covers the greatest surface area among all five oceans, making it the largest oceanic body on the globe.

 

8.Which of the world's five oceans covers the smallest area?

A) Atlantic Ocean
B) Arctic Ocean
C) Southern Ocean
D) Indian Ocean

ANSWER= (B) Arctic Ocean
Explain:- The Arctic Ocean, located around the North Pole, is the smallest and shallowest of the five recognized global oceans.

 

9. Regarding the Indian Ocean region surrounding India, where is the Arabian Sea located?

A) Directly along the northern border of Eurasia
B) To the immediate south of Antarctica
C) To the west of the Indian peninsula
D) To the east of the Indian peninsula

ANSWER= (C) To the west of the Indian peninsula
Explain:- The Arabian Sea lies to the west of India, while the Bay of Bengal lies to the east, both forming parts of the northern Indian Ocean.

 

10. What is the primary cause of a tsunami in the ocean?

A) Strong seasonal monsoon winds blowing across coastal waters
B) High ocean tides caused by the gravitational pull of the moon
C) Rapid melting of surface icebergs near the polar regions
D) An underwater earthquake or volcanic eruption displacing massive volumes of water

ANSWER= (D)An underwater earthquake or volcanic eruption displacing massive volumes of water
Explain:- Tsunamis are high-energy sea waves usually generated by sudden seabed movements from subsea earthquakes or volcanic eruptions.

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