Question

Which condition causes ocean salinity to increase?
A. freezing of polar ice caps
B. Strong tides
C. River water flowing out into the ocean
D. High levels of precipitation

Answer 1

That would be C. River water flowing out into the ocean.

Answer 2

If you have a doubt you can check your lesson or notes @rebecca245.

Answer 3

yes go with @SolidIceCream !

Answer 4

Thanks @Abhisar!

Answer 5

This is because rivers washes away the silt and inorganic salts present in the rocks into the ocean.

Answer 6

Thnx for what @SolidIceCream ?

Answer 7

For supporting with my answer @Abhisar.

Answer 8

Oh..u deserved that man..@SolidIceCream

Answer 9

D. High levels of precipitation

Answer 10

@vivek.pattani Can u pls justify ur answer ?

Answer 11

ok @Abhisar

Answer 12

I will explain each of the option
A. freezing of polar ice caps
It actually decreases the salinity of the ocean because melting of ice causes increase in water level of the ocean and salinity decreases
B. Strong tides
It has nothing to do with the salinity it is related with gravitational forces of sun, moon and earth and various other factors
C. River water flowing out into the ocean
Rivers add fresh water to the ocean so it decreases salinity. Fresh water enters the ocean through rain and rivers. Rivers bring in a small amount of new salt and dissolved minerals that remains after evaporation.Ocean water will become less saline near rivers which are adding fresh water to the ocean
D. High levels of precipitation
Evaporation will increase salinity, the water will evaporate but the salt will remain so the concentration goes up

Answer 13

Aaahh..i see..but precipitation means the condensation of atmospheric water vapour that falls under gravity. Like rain

Answer 14

Although u r correct about option C

Answer 15

So i think the correct answer will be A
@solidicecream

Answer 16

actually none of the above answer purely justifies the question

Answer 17

hmmmm..i see...ice formation should also lead to decrease in salinity since it traps the salts within it or better say brine within it

Answer 18

So the only option which seems to increase the sality is C...although i am not fully satisfied with it

Answer 19

Thnx everyone !

Answer 20

It's C this question was on my test.

Answer 21

I just haaaaad to say this...interesting fact, fresh water i.e. river water and saline water i.e. ocean water don't really mix...it is one of the many miraculous things in this world. They co-exist, flow side by side, but don't mix. That is why you can find fresh water springs and streams in the middle of the ocean.