Domains of the Earth
Q1. Fill in the blanks.
Life exists in the biosphere zone.
the only continent through which the tropic of Cancer, the Equator and the
The Andes is the world’s longest mountain range.
is called an island country.
The world’s longest river the Nile flows through Africa.
The Arctic Ocean is connected with the
Pacific Ocean by a narrow stretch of shallow water known as Berring Strait.
Europe lies to the west of Asia.
The Atlantic Ocean is ‘S’ shaped. True
Biosphere is one of the layers of the Atmosphere.
The South Pole lies almost at the centre of
Africa is the second largest country after
Pacific Ocean is ‘L’ in shape. False
The coastline of Atlantic Ocean is highly
The atmosphere is composed mainly of
nitrogen and argon. False
Q3. Why nitrogen considered as a significant gas?
Nitrogen is considered as a significant gas because it helps in the growth of
Q4. Name the three main components of the environment.
The three main components of the environment are lithosphere, atmosphere and
Q5. Name the oceans that surround the continent North America.
Oceans that surround the continent North America are Pacific Ocean, Atlantic
Ocean and Arctic Ocean.
Q6. Which two oceans surround South America on the east and the
On the east –Atlantic Ocean and on the west – Pacific Ocean
Q7. Why Carbon dioxide (CO2) is considered as an
important constituent of air?
dioxide (CO2) is important as it absorbs heat radiated by the earth,
thereby keeping the planet warm. It is also essential for the growth of plants.
Q8. Why oxygen is so important?
Oxygen is essential for our survival because oxygen is the breath of life.
the name of Indian research stations in Antarctica.
Ans. Maitri and Dakshin
Gangotri are the Indian research stations in Antarctica.
the percentage of the earth which is covered with water.
More than 71 percent of the earth is covered with water.
Q11. What percentage of earth’s water found in oceans?
More than 97% of the Earth’s water is found in the oceans.
Q12. Which is the world’s
The world’s longest river is Nile which flows through Africa.
the world’s largest river.
Ans. Amazon is the world’s
is the world’s largest hot desert and where is it located?
The Sahara Desert, the world’s largest hot desert, is located in Africa.
which hemisphere does Asia lie?
The continent Asia lies in the Eastern Hemisphere.
two oceans surround South America on the East and the West?
Ans. Atlantic Oceans
surrounds South America on the East and Pacific Ocean surrounds on the West.
the names of the continents that surround the Pacific Oceans.
Ans. Asia, Australia, North
and South Americas surround it.