Geography

Major Domains of the Earth

Question:

Mention the three main components of the environment. [V. Imp.]

Answer:

The three main components of the environment are – the lithosphere, the atmosphere and the hydrosphere. The lithosphere is the solid portion of the earth. The gaseous layers that surround the earth is the atmosphere. The atmosphere is made up of oxygen, nitrogen, carbondioxide and other gases. The hydrosphere refers to the big area of water that covers the earth's surface. This water is in the forms of ice, water and water vapour.

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Major Domains of the Earth

Q 1.

Mention two reasons of fast removal of soil from stops.      [V. Imp.l

Q 2.

How is nitrogen a significant gas?

Q 3.

Name the continents that surround the pacific ocean.

Q 4.

Which two oceans surround South America on the east and the west?

Q 5.

How much of the earth's water is found in the oceans?

Q 6.

Which is the busiest ocean from the point of view of commerce?

Q 7.

What is the nature of the temperature?

Q 8.

Explain biosphere the domain of life. [V. Imp.]

Q 9.

Name the Oceans that surround the continent North America.

Q 10.

Give an account of the composition of atmosphere. Also discuss the importance of the components. [V. Imp.]

Q 11.

Name the world's largest hot desert. Where is it located?

Q 12.

What happened to Andaman and Nicobar islands during Tsunami? [V. Imp.]

Q 13.

Mention the three main components of the environment. [V. Imp.]

Q 14.

Answer the following questions briefly.
(a)What are the four major domains of the earth?
(b)Name the major continents of the earth.
(c)Name the two continents that lie entirely in the Southern Hemisphere.
(d)Name the different layers of atmosphere.
(e)Why is the earth called the ‘blue planet'?
(f ) Why is the Northern Hemisphere called the land Hemisphere?
(g) Why is the biosphere important for living organisms?

Q 15.

What makes the water of lakes and rivers unsuitable for human use?

Q 16.

What is atmosphere? Write about its different layers.

Q 17.

What is the Junction of carbon dioxide?

Q 18.

Why is the ocean water not fit for human use?   [Imp.]

Q 19.

Name the research stations of India in Antarctica.

Q 20.

What percent of the earth is covered with water?   [Imp.]

Q 21.

What percent of earth is covered with land?

Q 22.

Mention any two reasons of air pollution.

Q 23.

In which Hemisphere does Asia lie?

Q 24.

Give the details of all the major continents. [V. Imp.]

Q 25.

What is the height of the Mt. Everest?

Q 26.

Which is larger Europe or Australia?

Q 27.

Write about the major oceans of the world.

Q 28.

Fill in the blanks with appropriate words to complete each sentence:
(i) The South Pole lies almost at the centre of………………..
(ii) Africa is the second largest continent after ……………..
(iii) The world's longest river the Nile flows through ………………
(iv) The hydrosphere comprises water in the form of………………. , water and ………….
(v) The Arctic Ocean is connected with the Pacific Ocean by a narrow stretch of  shallow water known as ……………
(vi) The Pacific Ocean is ………….  in shape.
(vii)’ The Coastline of Atlantic Ocean is highly ……………….
(viii) Europe lies to the ………….  of Asia.

Q 29.

How is North America linked to South America? [Imp.]

Q 30.

Why do the mountaineers carry with them oxygen cylinders?[Imp*]

Q 31.

Fill in the blanks.
(a)The deepest point on the earth is ……….. in the Pacific Ocean.
(b)The……… Ocean is named after a country.
(c)The……… is a narrow contact zone of land, water and air that supports life.
(d)The continents of Europe and Asia together are known as…………….
(e)The highest mountain peak on the earth is…………….

Q 32.

Collect pictures of expeditions to the Himalayas. Write about the kind of equipment carried by the climbers for protection against sunshine, temperature and the lack of air.

Q 33.

Write a short note on the hydrosphere'.

Q 34.

State whether these sentences aretrue (T) or false (F).
(i) The shape of the Pacific Ocean is almost triangular.
(ii) A veiy small part of Africa lies in the Northern Hemisphere.
(iii) The level of seawater remains the same everywhere.
(iv) Air moves from low pressure to high pressure.
(vi) Carbon dioxide is an important constituent of air.
(vii) The atmosphere is composed mainly of nitrogen and oxygen.