hydrosphere & oceanography section 6 MCQ Questions & Answers Detailed Explanation
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The following question based on Hydrosphere & Oceanography topic of indian geography mcq
(a) Bering sea
(b) Baltic sea
(c) North sea
(d) Sargasso sea
The correct answers to the above question in:
Answer: (d)
While all other seas in the world are defined at least in part by land boundaries, the Sargasso Sea is defined only by ocean currents. The Sargasso Sea does not have a coastline as it is located in the middle of the Atlantic Ocean.
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Read more hydrosphere oceanography Based Indian Geography Questions and Answers
Question : 1
Which one of the following is a warm ocean current ?
a) Gulf Stream
b) Labrador
c) Kurile
d) Canary
Answer »Answer: (a)
The Gulf Stream is a warm current that originates in the Gulf of Mexico and moves north toward Europe. Since it is full of warm water, the sea surface temperatures are warm, which keeps places like Europe warmer than other areas at similar latitudes.
Question : 2
The largest current, because of its dark waters is known as the ‘black current’ and that is :
a) Antarctic Current
b) California Current
c) Gulf Stream
d) Kuroshio Current
Answer »Answer: (d)
The word ‘Kuroshio’ means ‘Black Current’ in Japanese. Also known as Japan Current, it is a warm ocean current that flows up the East coast of Asia and under the influence of the westerly winds towards North America.
It is the counterpart of the Gulf Stream. However, the Antarctic Circumpolar Current is the largest oceanic current on Earth.
Question : 3
Which among the following statements characterized EI Nino?
- It occurs at irregular intervals
- It carriers warmer water
- It carries less saline water
- Its atmospheric equivalent is southern oscillation.
a) 1, 2, 3 and 4
b) 3 and 4 only
c) 1 and 2 only
d) 2 and 3 only
Answer »Answer: (a)
El Niño is a climate cycle in the Pacific Ocean with a global impact on weather patterns. The cycle begins when warm water in the western tropical Pacific Ocean shifts eastward along the equator toward the coast of South America.
Normally, these warm water pools near Indonesia and the Philippines. During an El Niño, the Pacific’s warmest surface waters sit offshore of northwestern South America.
Question : 4
Identify the correct statement regarding variation in density of ocean water and air at the same temperature—.
a) Ocean water is 200 times more denser than air.
b) Ocean water is 400 times more denser than air.
c) Ocean water is 800 times more denser than air.
d) Ocean water is 600 times more denser than air.
Answer »Answer: (c)
Water has a density of 1000 gm/m3. The air that is near sea level has a density that averages 1.275 kg. kg/m3.
If we want to know how much water is dense than air that 1000 kg/m3 divided by 1.275 kg/m3 yields 784. Therefore at sea level air is 784 times less than water.
Question : 5
Spring Tide occurs
a) When the night is very cold
b) When a strong wind blows
c) When the Sun, the Earth and Moon are in a straight line
d) When the Sun and Moon make a right angle
Answer »Answer: (c)
Question : 6
Echo sounding is the tech-nique applied to—
a) record the density of air in the atmosphere
b) record earthquake waves
c) measure the depth of the sea
d) measure the amplitude of sound waves
Answer »Answer: (c)
Echo sounding is the technique of using sound pulses to find the depth of water. The interval from the emission of a pulse to the reception of its echo is recorded, and the depth calculated from the known speed of propagation of sound through water.
This information is then typically used for navigation purposes or in order to obtain depths for charting purposes.
GET Hydrosphere & Oceanography PRACTICE TEST EXERCISES
hydrosphere & oceanography section 1
hydrosphere & oceanography section 2
hydrosphere & oceanography section 3
hydrosphere & oceanography section 4
hydrosphere & oceanography section 5
hydrosphere & oceanography section 6
hydrosphere & oceanography section 7
hydrosphere & oceanography section 8
Hydrosphere & Oceanography Shortcuts and Techniques with Examples
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