The vertical movement of cold water from deeper oceanic layers to replace warmer surface water is called as
Turbidity
Emergence
Upwelling
Halocline
Which one of the following types of sea floor sediments includes calcareous and siliceous oozes ?
Fluvial
Terrigenous
Biogenous
Hydrogenous
Salinity in water bodies increases with :
increase in evaporation and decrease in admixture of fresh water.
decrease in evaporation and increase in admixture of fresh water.
decrease in evaporation and no change in admixture of fresh water.
increase in evaporation and increase in admixture of fresh water.
ASSERTION (A) : The salinity in Dead sea is very low.
REASON (R) : Dead Sea is located in tropical dry climatic regions , where evaporation is high , precipitation is low and here drainage is internal.
Bothb (A) and (R) are right.
Both (A) and (R) are wrong.
(A) is wrong , but (R) is right.
(A) is right , (R) is wrong.
The Gulf Stream and the Kuroshio current move forcefully northward as a result of :
Western intensification
Eastern intensification
Northern intensification
Southern intensification
Which of the following is a cold current ?
Brazil current1
Gulf Stream
Benguela current
Agualhas currrent
ASSERTION (A) : Oceanic salinity is low in the equatorial region.
REASON (R) : Equatorial region is characterized by heavy rainfall, cloudiness and humidity.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true , but (R) is false.
(A) is false , but (R) is true.