Question

Does the salinity of the ocean increase when a freshwater source flows into it?

Answer 1

Nope, it decreases.

Answer 2

Freshwater contains little of salt, when flows into the ocean and does what we call a dilution.

Answer 3

oh ok thats what i had in mind when i came across the question. Thank u! can u help me in one or two more? i wanted too check

Answer 4

Yeah sure :)

Answer 5

Thank u:)
The growth of algae is limited by their need for..
A. warm ocean currents
B. carbon dioxide and sunlight
C. dissolved oxygen
D. low salinity

its B right?

Answer 6

Nope, dissolved oxygen :)

Answer 7

?! how do u know all of this!?

Answer 8

Algae often grows in deep ocean, therefore few sunlight

Answer 9

and mainly because algae can cause a pond to die, due to its need of oxygen

Answer 10

oh...ok! another?
What happens to water that is left behind after evaporation?
A. it gets hotter
B. it gets less dense
C. It moves faster to stay warm
D. Its salinity increases

I say..B or D

Answer 11

Umm, what kind of water?

Answer 12

Ocean water i believe

Answer 13

Then it's salinity increases, since salt doesn't evaporate.

Answer 14

alright!
umm..
What happens to the density of water as its salinity increases? (ocean water again)
A. density increases
B. density decreases
C. density remains same, temperature increases
D. density remains same, temperature decreases

B?

Answer 15

The increase of salinity doesn't affect its temperature

Answer 16

And can you define density for me? :)

Answer 17

density in what i think is like
The more water mass and pressure there is

Answer 18

or like the thickness of something

Answer 19

Density is mass divide per volume

Answer 20

but isn't that just the formula??

Answer 21

Therefore, when you add salt in your water, the mass increases but the volume just a little bit

Answer 22

Mass ++
Volume +

=

Increase Density.

Answer 23

So that means that the density increases?

Answer 24

Exact :)

Answer 25

So..what makes the water movement of the tide in a narrow strip of coastal land seem extreme?

Answer 26

Tidal bores?

Answer 27

@zepp

Answer 28

Tide moves faster in restricted volumes for the same reason water flows faster when you make it go though a smaller pipe, the flow pressure has increased.

Answer 29

i don't understand?

Answer 30

don't tidal bores cause the movement?

Answer 31

Have an open hose flowing water... You put your thumb over the opening and press down, restricting the size of the opening. The water pressure at that point goes up and you can shoot the water droplets further.

Answer 32

Right.

Answer 33

The movement is caused by the tide. The tide is caused by the gravitational pull of the moon on the earth. As the moon spins around us, it pulls the oceans up an down ever so slightly and slowly. Because the oceans are so gigantic, we can actually see this effect. I don't even know what a tidal bore is, but it's just common-sense fluid physics here. Nothing fancy.

Waves on the other hand, contrary to what people sometimes say, aren't caused by the moon. They are caused by wind. Need proof? Best time to catch some mega-surf is before the hurricane arrives.

Answer 34

Woah. i had like a total different understanding. Thank u so much for helping!

Answer 35

Easy way to think of a flow cause by a tide. Take a kiddie pool (you know those little inflatable pools you can fill up with a garden hose?), full of water. Take a sword or something and gash the side wall down in an spot, just chop straight down. All the water comes rolling out, and rolls out faster where you made the cut (where the flow is restricted).