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11
Pacific Ocean is surrounded by the-
A. North America, South America, Asia, Europe
B. Asia, Europe, Australia, Africa
C. North America, south America, Asia, Australia
D. None of the above
Answer - C
Solution
Points to Know-
• Pacific Ocean-
• Largest ocean, Spread over one-third of the earth.
• Mariana Trench, the deepest part of the earth, lies in the Pacific Ocean.
• It is almost circular in shape.
• Asia, Australia, North and South America surround it
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12
Which ocean’s coastline is highly indented which provides ideal location for natural harbours and ports and is the busiest Ocean?
A. Pacific
B. Atlantic
C. Arctic
D. Indian
Answer - B
Solution
Points to Know-
Atlantic Ocean-
• Second largest ocean and is ‘S’ shaped.
• Flanked by the North and South America on the western side, and Europe and Africa on the eastern side.
• The coastline of Atlantic Ocean is highly indented which provides ideal location for natural harbours and ports
• It is the busiest Ocean
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13
Bering strait connects
A. Arctic and Pacific
B. Arctic and Atlantic
C. Atlantic and Pacific
D. Pacific and Indian
Answer - A
Solution
Points to Know-
Arctic Ocean is connected with the Pacific Ocean by a narrow stretch of shallow water known as Bering strait.
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14
Which of the following is true?
A. Density of atmosphere increases with height
B. Air moves from low pressure to high pressure
C. Temperature increases on going upwards
D. None of the above
Answer - D
Solution
Points to Know-
• The density of the atmosphere varies with height. It is maximum at the sea level and decreases rapidly as we go up.
• Temperature decreases as we go upwards.
• The atmosphere exerts pressure on the earth which varies from place to place. Air moves from high pressure to low pressure.
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15
Layer of the atmosphere closest to the earth is-
A. Thermosphere
B. Mesosphere
C. Troposphere
D. Stratosphere
Answer - C
Solution
Points to Know-
Layers starting from earth’s surface are- the troposphere, the stratosphere, the mesosphere, the thermosphere and the exosphere.
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16
99% of the atmosphere is composed of-
A. Oxygen and carbon dioxide
B. Argon and oxygen
C. Carbon dioxide and nitrogen
D. Nitrogen and oxygen
Answer - D
Solution
Points to Know-
• Atmosphere is composed mainly of nitrogen and oxygen, which make up about 99 per cent of clean, dry air.
• Nitrogen 78 per cent, oxygen 21 per cent and other gases like carbon dioxide, argon and others comprise 1 per cent by volume.
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17
Mountain is a steep hill with an elevation of more than
A. 300 m
B. 400 m
C. 500 m
D. 600 m
Answer - D
Solution
Points to Know-
Generally, a steep hill with an elevation of more than 600 metres is termed as a mountain.
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18
The uplifted blocks in block mountain is known as
A. Fault
B. Horsts
C. Vent
D. Graben
Answer - B
Solution
Points to Know-
Block Mountains are created when large areas are broken and displaced vertically.
The uplifted blocks are termed as horsts and the lowered blocks are called graben.
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19
Mauna Kea, an undersea mountain is located in-
A. Pacific Ocean
B. Indian Ocean
C. Atlantic Ocean
D. Arctic Ocean
Answer - A
Solution
Points to Know-
Mauna Kea (Hawaii) in the Pacific Ocean is an undersea mountain which is higher than Mount Everest.
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20
Which of the following is an example of fold mountain?
A. Kilimanjaro
B. Fujiyama
C. Vosges
D. Alps
Answer - D
Solution
Points to Know-
Fold mountains- The Himalayan Mountains, The Alps, The Aravalli, Appalachians in North America and Ural Mountains in Russia.
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