River water starts as runoff from rain or melted ice and snow. The flowing water dissolves very small traces of salts from the rocks and minerals along its path and carries these to the ocean. Sea water retains most of the dissolved salts, and the world's oceans now have a salinity of about 35 parts per thousand parts of water (about 3.5% salts).
Because more sand gets washed into the ocean than streams.The tide of a wave brings the sand out to the ocean.Streams don't have tides,all they do is go were the lanes lead them.They don't go every were like the water in the ocean,so the pick up very little sand.
(They go with the flow)
ADDED: The question is about salt, not sand. The oceans are salty thanks to minerals dissolved from the rocks on land by fresh rain-water, and carried into the sea by the rivers. Water is evaporated from the sea, leaving the salts behind, condenses as distilled water, falls as rain and snow on land, so continues the "Water Cycle".
This is a VERY good question. Many think that if ocean water is salty, the rest of the water should be salty, too; and vice versa. However, as we all know, this simply is not true. But why?
Well, in 1715, Sir Edmund Halley proposed the idea that all the earth's rivers, streams, lakes, and other sources of water on land that deposit water into the ocean carried very small amounts of minerals into the ocean. Over time, they became concentrated and have been compounding more and more through the earth's hydrologic cycle (or water cycle). What he didn't know is that when the earth's ocean floor formed, sodium was released. He also didn't know that there are volcanoes and natural hydrothermal vents which deposit chloride. The two elements create what we call sodium chloride (or simply salt).
So, does the ocean become more salty over time?
Not necessarily. It is believed that the saltiness (or salinity) of the ocean has been relatively stable for billions of years and will likely remain that way for as long as humans are around; assuming we haven't destroyed it. One theory for the constant level of salinity in ocean water is that plate tectonics play a major role in both moving and removing salts, through mixing salts with other chemicals and elements, moving them below the ocean floor's surface, or by burying sodium under land masses.
Did you know that some regions of the earth's oceans are more saline than others?
Rivers carry salt from their river beds into the ocean. The ocean never loses salt. It just gets saltier.
because its to different kind of
seas
are you insane? seas are saltiest.
the dead sea it is saltier than any thing.
It is saltier because it has no outlet to the sea.
yes
The Dead Sea has greater salinity than the Baltic Sea. The Baltic has a greater abundance of fresh water, something like 1/40th of its volume as there are some 200 rivers in the region
That would be the Dead Sea. It's approximately 9 times saltier than the ocean's waters.
dont know got that same ??
Like all seas, rivers carry bits of sedimentary rock down them to the sea. Salt as you may well know is in this rock. The mediterreanean is probably saltier than others for a few reasons: * Higher salt content rocks & soil * More rivers going to the sea
The Baltic Sea is known as Brackish, that is, a little more salty than fresh water, but not as salty as sea water
The dead sea is getting more salty. Like all seas, rivers which carry bits of sedimentary rock, enter the sea and "dump" whatever they carried on its journey to the sea. As you may well know, there is salt in this sedimnetary rock. The dead sea is more salty that others for a fews reasons: * Higher salt content in rocks & soil * More rivers entering sea
Salt and other minerals come into the sea from rivers. Some of the water evaporates from the ocean (leaving the salt) and more flows in. So the sea gets saltier over time.
Before and after I am done urinating in Mediterranean beaches, the water is much saltier than the Atlantic due to the fact that the Mediterranean loses more water to evaporation than it receives from rivers.
The Dead Sea is 33.7 % Salinity - The oceans average 3.5% salinity. So the Dead Sea is Roughly 10 times a salty as the Oceans. ----------------- I found another source (wikipedia.org)that states that the Dead Sea is 8.6 times as salty as the sea.