The Rannutsav has highlighted the Rann of Kutch. This region is well known for which of these geographical features?
Bay of Bengal shows low salinity of water as compared to the Arabian Sea due to
1. Huge influx of fresh water in the Bay of Bengal
2. High evaporation in the Arabian Sea as compared to the Bay of Bengal
3. Low influx of fresh water in the Arabian Sea
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Which of the following factors has no or negligible effect on the salinity of oceans.
Tidal range is the difference between high tide and low tide. Which of the following factors can influence the tidal range?
1. Depth of ocean water
2. Ocean current
3. Openness and closeness of the sea
4. Configuration of coastline
5. Gravitational pull of Sun and Moon
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Factors that affect the formation of tides in the Ocean are
1. Alignment of Earth, Sun and Moon
2. Relative distance between the Moon, Earth and Sun
3. Shape of bays and estuaries where tides are formed
4. Local wind and weather patterns in Ocean
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The California Ocean current, which flows along the west coast of North America, is a
The meeting of the cold Labrador current and warm Gulf stream current leads to
1. Dense mist and fog
2. An Arid Climate Zone
Which of the above is/are correct?
Which of these forces help in the movement or generation of ocean currents?
1. Coriolis force
2. Gravitational force
3. Solar insolation
4. Movement of wind
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It is the western boundary current of the southwest Indian Ocean. It acts as an oceanic convergence zone. This ocean current is
Within the Earth’s ocean and atmosphere, Rossby waves form as a result of
Which of the following factors affect the direction of movement of ocean currents?
1. Ocean Salinity
2. Ocean temperature
3. The Earth’s rotation
4. The planetary winds
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Cold currents bring cold water into warm water areas. These currents are usually found on the
1. West coast of the continents in the low and middle latitudes in both hemispheres
2. East coasts in the higher latitudes in the Northern Hemisphere
Which of the above is/are correct?
Consider the following statements:
1. It is found that subsurface ocean currents once absorbed carbon dioxide from winds and released them elsewhere.
2. Ocean currents redistribute heat in the oceans.
Which of the above statements is/are correct?
Which of the following ocean currents is/are cold ocean currents?
1. Benguela Current
2. Labrador Current
3. Gulf Stream
4. Brazilian Current
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The Chilean and Peruvian coasts are practically rainless. This is because of
The Agulhas current acts as an oceanic convergence zone. This zone has higher primary productivity than surrounding waters. This is because
1. The zone is a meeting point of all major ocean currents of the Indian Ocean.
2. There is an upwelling of cold ocean water from the lower layers of the ocean.
Which of the above is/are correct?
The West Wind Drift is the most important current in the Southern Ocean and the only current that flows completely around the globe. However, its circulation is circumpolar in nature due to
Consider the following statements:
Assertion (A): In the North Indian Ocean, there is a complete reversal of the direction of ocean currents between summer and winter.
Reason (R): Monsoon winds change direction from South-west to Northeast.
In the context of the above, which of these is/are correct?
Consider the following about the phenomenon of Upwelling in the Indian Ocean:
1. It is a seasonal phenomenon associated with the monsoon.
2. It is weakest in regions closest to the equator and strongest near subtropical latitudes.
3. It brings nutrient-rich water to the surface and enhances the biological productivity of the region.
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Regarding corals, consider the following statements:
1. Coral are marine invertebrate species.
2. Corals secrete calcium carbonate which forms the outer skeleton.
3. Corals grow in shallow waters to absorb sunlight for photosynthesis to produce their food.
Which of the above is/are correct?
Consider the following statements regarding the formation of corals:
1. The water temperature must be between 15 and 20°C
2. The depth of the water should not be more than 180 feet
3. The water should be fresh and should have rich sediment to provide nutrition
Which of the above is/are correct?
Tropical coral reefs are very productive ecosystems. Which of the following are benefits accrued from coral reefs?
1. They sustain about a quarter of the ocean’s fish population.
2. Coral reefs break the power of the waves during storms, cyclones and tsunamis.
3. Coral reefs can provide potent anti-HIV proteins.
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Regarding Lakshadweep islands, consider the following statements:
1. They form the smallest Union Territories of Government of India.
2. The islands do not have any aboriginal groups.
3. Lakshadweep has no coral reefs.
Which of the above is/are correct?
Which of the following islands are not coral islands:
1. Lakshadweep Islands
2. Maldives
3. Bermuda Islands
4. Andaman and Nicobar
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180 videos|475 docs|195 tests
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180 videos|475 docs|195 tests
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