Why_Is_Ocean_Water_Salty____Earth_s_Ocean___Dr_Binocs_Show___Peekaboo_Kidz(360p)

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00:00To be continued...

00:14You can't drink ocean water, Kitty. It's salty.

00:18Why?

00:20Hmm, that's an excellent question.

00:24Hey friends, I'm sure while taking a dive in an ocean,

00:28you must have got a little taste of its salty water.

00:32Making you wonder, who must have added so much salt to it?

00:37Well, in today's episode, let us try to debunk this mystery

00:42and answer a deep question.

00:45Why is the ocean water salty?

00:49Zoom in!

00:52The world is surrounded by water.

00:55In fact, oceans cover 70% of Earth's surface

01:00and account for about 97% of all water.

01:04And approximately around 3.5% of total ocean water is salt.

01:11Which may not sound like too much,

01:13but it works out to 120 million tons of salt per cubic mile of sea water.

01:21But the vital question is, where did all the salts come from?

01:28Well, salt in the ocean comes from mainly two sources.

01:33Run up from the land and openings in the sea floor.

01:38You see, when the rain forms and pours through the air,

01:43it collects carbon dioxide from the atmosphere on its way.

01:48Turning the fresh water slightly acidic in nature.

01:52And once this acidic water meets the land surface,

01:56it erodes the rocks and picks up small amounts of salt

02:00and other dissolved minerals already present in the rocks.

02:05At this point, the water is still basically fresh.

02:10There is some salt in it, but usually not enough to make it undrinkable.

02:16But when this mixed rain water makes its way to the ocean,

02:21over there some of the dissolved minerals such as calcium

02:26are extracted from the water by the organisms through a biological process.

02:31But salt tends to remain, thus making the water undrinkable and salty.

02:39But not only that, another factor responsible for turning the oceanic water salty

02:46is hydrothermal fluids which come from vents in the sea floor.

02:52You see, when the salted ocean water seeps into cracks in the sea floor,

02:58over there it gets heated by magma from the earth's core.

03:03This heat causes a chain of chemical reactions

03:07and the water tends to lose oxygen, magnesium and sulphates

03:13and pick up metals such as iron, zinc and copper from surrounding rocks.

03:19The heated water is released through vents in the sea floor,

03:23carrying the additional metals with it.

03:26And as a result, the ocean water gets saltier.

03:32I know what you guys are thinking, but why aren't lakes and rivers salty?

03:38Well, these water bodies have some amount of salt in them too.

03:43But as they are continually flowing, it's hard for the salt to get accumulated

03:49and get carried away into the ocean, rubbing most salt into its wound.

03:59But remember, this salted water is home to many aquatic animals and plants

04:06and plays a massive role in the existence of our earth.

04:10So, we need to make sure to keep our oceans clean and free from any pollution.

04:18Trivia time!

04:21Did you know, two of the most common minerals in sea water are chloride and sodium?

04:28Yes! Together, they make up around 85% of all dissolved minerals in the ocean.

04:38Hope you learned something new in today's episode.

04:41Until next time, it's me, Dr. Binox, zooming out!

04:51Ah, never mind!

04:58I'm talking about the sky.

04:59Oh, my God!

05:01I love you.

05:03So, let's begin.

05:04Your ocean water is in the sea water.

05:07All right, I'm going to help you.

05:09Why do you want to breathe from us?

05:11Well, let's have a water in the sea water.

05:12So, let's go.

05:14Let's go!

05:15I'll be in the sea water.

05:16Have to breathe!

05:17Oh, my God!

05:18My water is in the sea water.

05:19So, let's go.

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