Land and Oceans 6th Social Science Lesson 6 Questions in English
21. The plains are usually________ above sea level
a) Less than 600 mts
b) Less than 900 mts
c) Less than 200 mts
d) Greater than 200 mts
Explanation
Plains are a flat and relatively low-lying lands. Plains are usually less than 200 meter above sea level.
22. Nile Valley civilization in found in_____
a) India
b) Egypt
c) Mesopotamia
d) South Africa
Explanation
The plains have been the cradle of civilizations from the earliest times. For example: the Indus in India, the Nile valley in Egypt are some of the early civilizations which developed and flourished.
23. Which of the following statement is incorrect?
1) Most plains are formed by rivers and their tributaries and distributaries.
2) Plains are used extensively for agriculture due to the availability of water and fertile soil.
a) 1 alone
b) 2 alone
c) 1, 2
d) None
Explanation
Most plains are formed by rivers and their tributaries and distributaries. These plains are used extensively for agriculture due to the availability of water and fertile soil.
24. The largest plain in the world is_____
a) Indo-Gangetic plain
b) Nile plain
c) Amazon plain
d) None
Explanation
The oldest civilizations like the Mesopotamian and the Indus civilizations developed in river plains. The Indo-Gangetic plain in North India is one of the largest plains in the world.
25. Third order landforms are formed from_____
a) Mountains
b) Plateaus
c) Plains
d) All the above
Explanation
Third order landforms are formed on mountains, plateaus and plains mainly by erosional and depositional activities of rivers, glaciers, winds and waves.
26. Which of the following is the example of Third order landform?
a) Valleys
b) Beaches
c) sand dune
d) All the above
Explanation
Valleys, beaches and sand dunes are some examples of third order landform.
27. Which of the following statement is correct?
1) Erosion is the process of removal of surface material from the Earth’s core.
2) The eroded materials are transported and deposited on low lying areas is called as Deposition.
a) 1 alone
b) 2 alone
c) 1, 2
d) None
Explanation
Erosion is the process of removal of surface material from the Earth’s crust. The eroded materials are transported and deposited on the low-lying areas. This process is called as Deposition.
28. _____ of earth is covered with water
a) 2/3rd
b) 3/4th
c) 4/5th
d) 1/3rd
Explanation
The Earth looks blue when we see it from space. This is because, two-thirds of it is covered by water. The water is found in oceans and seas.
29. Which of the following ocean is the deepest ocean in the world?
a) Indian Ocean
b) Pacific Ocean
c) Arctic Ocean
d) Southern Ocean
Explanation
The Pacific Ocean is the largest and deepest ocean on the Earth. It covers about one-third of the Earth’s total area and spreads for about 168.72 million sq.km.
30. Pacific Ocean bounded by______ in its West
a) Asia and Europe
b) Asia and North America
c) North America and South America
d) Asia and Australia
Explanation
Pacific Ocean is bounded by Asia and Australia in its west and North America and South America in its east. It stretches from the Arctic Ocean in the north to the Southern Ocean in the south.