Oceans and Continents Class 6 Questions and Answers

Oceans and Continents Class 6 Question Answer Social Science Chapter 2

NCERT Class 6 Social Science SST Chapter 2 Oceans and Continents Questions and Answers Solutions

Oceans and Continents Class 6 Questions and Answers (InText)

Let’s Explore (Page 29)

Question 1.
What are the circular lines in each map called? And do you know what the lines radiating out of the two poles are called? (Hint: you studied them in the previous chapter, but here they are presented differently.)
Answer:
The circular lines in each map are the latitudes and longitudes. The lines radiating out of the two poles are 90° N and 90° S.

Question 2.
Which hemisphere holds more water?
Answer:
The Southern Hemisphere contains more water.

Question 3.
What do you think could be the approximate proportion of water to land in the Northern Hemisphere and in the Southern Hemisphere? Discuss in groups.
Answer:
The approximate proportions of water to land in the Northern and Southern Hemispheres is
Northern Hemisphere

• Water About 60 % of the surface area.
• Land About 40 % of the surface area.

Southern Hemisphere

• Water About 80 % of the surface area.
• Land About 20 % of the surface area.

Question 4.
Are all the oceans connected with one another, or are there separations between them?
Answer:
Yes, all the oceans are connected to one another. There is no strict division around the boundaries of the oceans.

Think About It (Page 31)

Question 1.
If there is such an abundance of water on the planet, why is there so much talk of ‘water scarcity’ or a ‘water crisis’?
Answer:
The water on the planet is in abundance but we often face scarcity of water because only some of the water is useful for human use.
The saline water of oceans cannot be used directly.

Question 2.
What ways of saving water are you aware of? Which ones have you seen practised at home, at your school and in your village, town or city?
Answer:
The different ways of saving water as follows
(a) Rainwater harvesting it is the process of storing rainwater for future use. This rainwater can be stored in the tanks till the next rainfall.
(b) Recycling waste water it involves treating and reusing water that has already been used for various purposes.
(c) Drip irrigation it is the process of delivering water directly to the roots of plants through small tubes and emitters.

Let’s Explore (Page 32)

Question 1.
Locate the five oceans in the table below, mark the hemisphere or hemispheres they belong to.


Answer:

Let’s Explore (Page 36)

Question 1.
Counting the number of squares, name the largest continent and the smallest.

Answer:
Asia is the largest continent as there are 44 blocs in Asia. Australia is the smallest with 8 blocs.

Question 2.
Which one is larger-North America or South America, Africa or North America, Antarctica or Australia?
Answer:
South America is larger than North America, Africa is larger than North America and Antarctica is larger than Australia.

Question 3.
Re-colour the diagram by having a single colour for Europe and Asia and rename the result as ‘Eurasia’. Compare its size with the continent of South America.
Answer:
The blocs in Eurasia will be 47 and in South America are 18 . There will be a difference of 29 blocks between the two continents. Hence, Eurasia will be more than double of South America’s size.

Question 4.
Write down the list of continents from the smallest to the largest.
Answer:
The list of continents from smallest to the largest is as follows

1. Australia
2. Europe
3. Antarctica
4. North America
5. South America
6. Africa
7. Asia

Class 6 SST Oceans and Continents Question Answer (Exercise)

Question 1.
Explain the following terms
(a) Continent
(b) Ocean
(c) Island
Answer:
(a) A continent is a large continuous expanse of land. On a map, continents are depicted as extensive landmasses that cover a significant portion of the Earth’s surface. They are surrounded by water but are not considered islands due to their vast size. The seven widely accepted continents are Africa, Antarctica, Asia, Australia, Europe, North America and South America.

(b) An ocean is a large body of saltwater that covers a significant portion of the Earth’s surface. Oceans are the largest water bodies on the globe, covering almost three-fourths of the Earth’s surface. There are five main oceans, the Pacific Ocean, the Atlantic Ocean, the Indian Ocean: the Arctic Ocean and the Southern (or Antarctic) Ocean.

(c) An island is a smaller piece of land surrounded by water on all sides. Unlike continents, islands are not large enough to be considered landmasses. Islands can vary greatly in size, with some being large enough to host significant populations and infrastructure, while others may be small and uninhabited. An example of a large island is Greenland, the largest in the world.

Question 2.
Let us draw-Without looking at the maps in this chapter, draw the continents free hand on a sheet of paper and colour them. Then compare your drawing with the map of oceans and continents in the chapter.
Answer:
Do it yourself

Question 3.
Let us do-On the outline map of the world given below, label all the continents and oceans.

Answer:

Question 4.
Solve this Crossword
Across
1. Abundantly produced by the oceans
3. A large expanse of landmass
6. A large continent of which India is a part
8. A major source of pollution of the oceans
10. The coldest continent
Down
2. The largest island on Earth
4. A huge destructive wave from the ocean
5. The smallest continent
7. The largest body of water on the Earth
9. A landmass (but not a continent) surrounded by the sea or ocean

Answer:
1. Oxygen
2. Greenland
3. Continent
4. Tsunami
5. Australia
6. Eurasia
7. Pacific
8. Plastic
9. Island
10. Antarctica

Exploring Society India and Beyond Class 6 Solutions