कर ‏ہیک‎ `

204/2015

10,

Deepest parts of the oceans are called :
(५) Mid-ocean ridges (B) Seamount
(C) Trench (D) Continental shelf

The most abundant component of sea water is :
(ക) Chlorine (18) Sulphate (C) Sedium (D) Potassium

The average speed of sound in the ocean is :
(A) 200 m/s (B) 800 m/s (C) 15300 m/s 0) 2500 m/s

The layer where ocean temperature decreases rapidly with depth is called :
(A) Halocline (ए) Pycnocline (€) Thermocline (D) SOFAR channel

On the average, sea surface salinity is :
(A} Maximum at the equator (18) Maximum around 30 degrees latitude
(ய) Maximum at poles (D) None of the above

Heat lost by sea due to evaporation is called :
(A) Shortwave radiation (B) Longwave radiation
(C) Latent heat (D) Sensible heat

If the time taken by a sound pulse to travel from the sound source at sea surface to the ocean
floor and back is 3 seconds, then the approximate ocean depth is :
(A) 2250 m (B) 4500 m ) 9000 m (D) 9500 m

(70110115 force at the equator is ©
(A) Maxamum (8) 760
)© Varies with longitude (D) Varies with depth

Wind stress is proportional to :
(९) Wind speed (8) Square of wind speed
(9) Cube of wind speed (12) Square root of wind speed

In the ocean, light intensity :

(ക) Increases linearly with depth

(8) Decreases linearly with depth

(C) Increases exponentially with depth
(2) Decreases exponentially with depth

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