1. Which of the following creates ocean upwelling off the coasts of Peru and Ecuador and brings nutrient - rich cold water to the surface, increasing fishing stocks

1. 1. Water circulation

   
   
   

   2. EI Nino and La Nina

   
   
   

   3. EI Nino

   
   
   

   4. La Nina

   
   
   

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   NA

   Correct Option: A

   NA

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2. The development of an EI Nino brings

1. 1. Drought to the western Pacific

   
   
   

   2. Rains to the equatorial coast of South America

   
   
   

   3. Convective storms hurricanes to the central Pacific

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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3. The occasional development of warm ocean surface waters along the coast of Ecuador and Peru is known as

1. 1. EI Nino and La Nina

   
   
   

   2. EI Nino

   
   
   

   3. La Nina

   
   
   

   4. Southern Oscillation

   
   
   

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   NA

   Correct Option: B

   NA

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4. Tsunamis are produced by

1. 1. Shrinking of the earth's crust

   
   
   

   2. Cyclones

   
   
   

   3. Submarine earthquakes

   
   
   

   4. Tides

   
   
   

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   NA

   Correct Option: C

   NA

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5. In some years the trade winds can become extremely strong and an abnormal accumulation of cold water can occur in the central and eastern Pacific. This event is called

1. 1. La Nina

   
   
   

   2. EI Nino

   
   
   

   3. Southern Oscillation

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: A

   NA

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