| Which of the following factors cause an increase in salinity of ocean water. |
| 1. High temperature |
| 2. High humidity |
| 3. Presence of winds |
| 4. Presence of river mouths |
| Select the correct answer using the codes given below. |
A) 1 and 3
B) 1 and 4
C) 1, 2 and 3
D) All of these
Correct Answer: A
Solution :
[a] In general, higher the temperature' the higher is the evaporation, but if humidity is higher, evaporation is not higher even if the temperature is high. Thus, equatorial regions with higher temperature, but higher humidity does not have high salinity. Salinity changes slightly due to winds. Presence of winds causes increased evaporation, which results in high salinity. The amount of salinity decreases due to the influx of freshwater by river. Hence, near the mouths of rivers Amazon, Congo, Niger, Ganges and St Lawrence, comparatively lower salinity is found.
You need to login to perform this action.
You will be redirected in
3 sec
