THINGS_TO_KNOW_-_KIDS_VIDEOS____THINGS_TO_LEARN_-_LEARNING_VIDEOS_FOR_KIDS(360p)

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00:00Join Kids Hat Family

00:30Oh my God!

00:35This was so much fun!

00:38Yes, it certainly was.

00:41But Tia, why do I taste salt in my mouth?

00:48Why is the sea water salty?

00:51When the rain flows over the land,

00:54the water washes salt and other minerals out of the rocks

00:59and gets mixed with the water in the streams, rivers etc.

01:08The rivers finally carry the salt to the sea.

01:12The salt stays in the sea as no water flows out of the sea.

01:18When the sea water evaporates to form clouds,

01:22almost all the salt stays behind.

01:26The left behind salt slowly gets collected over a period of time

01:32and this is how sea water gets salty.

01:45Oh! That is the reason we cannot drink sea water.

01:49It's too salty.

01:53Yes, almost 96% of water on earth is in the oceans.

02:01And still we cannot drink it directly.

02:08Water, water everywhere and not a drop to drink.

02:12Good job to drink!

02:13Hahaha!

02:42Tia, why do trees lose their leaves in the autumn season?

02:44Tia, why do trees lose their leaves in the autumn season?

02:45Before telling you why trees shed their leaves,

02:47Tia, why do trees lose their leaves in the autumn season?

02:48Tia, why do trees lose their leaves in the autumn season?

02:52Before telling you why trees shed their leaves,

02:54Do you know, Tia, why do trees lose their leaves in the autumn season?

02:59Tia, why do trees lose their leaves in the autumn season?

03:05Tia, why do trees lose their leaves in the autumn season?

03:09Tia, why do trees lose their leaves in the autumn season?

03:12Before telling you why trees shed their leaves,

03:15Do you know, tofu, how trees get their energy?

03:20Energy?

03:21Yes, energy.

03:23Just like we eat food to get energy,

03:26Trees make their food too to get energy.

03:30How do they make their food?

03:32Trees use sunlight from the sun

03:38and water from the ground to make their food.

03:44The leaves use the sunlight and water to make food.

03:50But I didn't understand why do they shed leaves?

03:56When the winter set in,

03:58the days become shorter

04:00and the sunlight is hardly available.

04:05So when sunlight is not available,

04:07the trees cannot make food.

04:09Rather than continuing to make food with little sunlight,

04:14they go in a rest position by shedding their leaves.

04:18This way they use very little energy and have just enough water and nutrition stored in their trunk to stay alive till spring arrives.

04:33When spring arrives, the temperature goes up and there is more sunlight.

04:38New leaves grow and cover the tree once more.

04:47Oh!

04:49But why do I see some trees not shedding their leaves all throughout the year?

04:54That's because there are some tree species that retain their leaves all throughout winters.

05:03They are called evergreen trees.

05:06That's because these trees are used to the cold and have very deep roots that can reach water and nutrition even in snowy conditions.

05:18Wow!

05:20After so much interesting information,

05:24I think I need some food too.

05:27Let's go and ask mum what's for dinner.

05:30Let's go and ask mum for dinner.

06:00Tofu, are you feeling sleepy?

06:06No, just tired.

06:09But Tia, what makes us yawn?

06:12And why is it so that when I see someone yawning,

06:16I kind of feel like yawning too?

06:19Yawning is an involuntary action which we all do.

06:24And we all know that it is a feature of sleeping.

06:28It is commonly associated with tiredness, stress and boredom.

06:35All vertebrates do yawn including fish and birds.

06:41Human baby starts yawning since they are 20 weeks old.

06:47So how do we do it?

06:49During a yawn, we open our mouth and we suck in a large amount of air

06:55and expand our chest.

06:59The cavity pulls down our diaphragm and fills air in our lungs and exhales it out.

07:06There are a number of theories that attempt to explain why animals and people yawn.

07:17As per the physiological theory,

07:19our bodies induce yawning in order to draw in more oxygen or remove a build up of carbon dioxide.

07:30A more recent theory explains that we yawn more in the situations where our brain is likely to be warmer.

07:38So it's a way to cool down our brain.

07:45Do you know that the average yawn lasts around 6 seconds?

07:49Yawning is contagious.

07:54Only humans, chimps and possibly dogs find them contagious.

08:00Recent studies show contagious yawning may be linked to one's capacity for understanding and sharing the feelings of others.

08:10So Tofu, how many times have you yawned while listening to me?

08:16I hope not too many.

08:40I hope not too many.

08:54What are you looking at?

08:56At the moon.

08:58It looks so beautiful.

09:02But Tia, why does the moon shine?

09:06Now that's quite interesting Tofu.

09:08Technically, the moon does not shine by itself because it has no light of its own.

09:15It appears to shine because of the sunlight that reaches it.

09:21Ah Tofu, let's go home.

09:23I'll explain you how the moon shines.

09:25Hold this ball in your hands Tofu and I'll hold this flashlight in my hand.

09:39Okay, but what do they represent?

09:42The flashlight in my hand represents the sun.

09:45The ball in your hand represents the earth and the mirror on the wall represents the moon.

09:52Do you see the mirror shining and that light getting reflected on the ball Tofu?

10:00Yes!

10:01This is what happens.

10:02The moon just reflects the light of the sun and what we see is the reflection of that light.

10:09Oh!

10:10The moon reflects only 7% of the sun's light and then glows softly.

10:20The fact that it glows softly and reflects only 7% of sun's light is that it absorbs most of the light that falls on it from the sun.

10:32Now I know why the moon looks so beautiful.

10:45Now time to sleep Tofu.

10:47Oh!

11:02Look there.

11:04It's a rainbow.

11:09Yes.

11:10A rainbow Tofu.

11:12Can you tell me all the colors in the rainbow?

11:15Violet.

11:17Indigo.

11:19Blue.

11:20Green.

11:22Yellow.

11:23Orange.

11:25And red.

11:32Vip Gyor.

11:33That's the way to remember it.

11:36All 7 colors and it looks so pretty.

11:39But how is a rainbow formed?

11:42Rainbows are spectacular rays of color.

11:45Sunlight looks white.

11:47But it's really made of different colors.

11:50A rainbow is seen when the sun shines after the rain.

11:55Hmm.

11:56White light is made of 7 colors.

12:02Wow!

12:03What's this?

12:04It's a prism.

12:05A prism.

12:06Okay.

12:07Let me explain it to you with the help of a prism.

12:14The sun forms a rainbow when white light passes through raindrops.

12:20The rain drops act like tiny prisms.

12:22When sunlight passes through a raindrop it bends and scatters into the band of colors.

12:32This can be reflected back to you as a rainbow.

12:36But where do I look for a rainbow?

12:39You need to remember three things.

12:42First, it must be raining.

12:45It must be raining.

12:47Second, the sun must be shining.

12:51The sun must be shining.

12:53Third, you must be between the sun and the rain.

13:01Okay, Tofu.

13:02Now let's enjoy watching the wonderful rainbow.

13:23Let's enjoy reading.

13:47Bless you Tofu.

13:48You're sneezing.

13:51Take this handkerchief.

13:53Why do we sneeze?

14:00Almost anything that irritates or tickles inside your nose can cause you to sneeze.

14:06Like dust, pollens, cold air, pets and pepper can cause sneezing.

14:23But what happens when we sneeze?

14:28The nose is an extremely sensitive organ that regulates the air we breathe.

14:36It makes sure we breathe clean and healthy air.

14:42Air sometimes has tiny particles that are unsuitable for us.

14:47When we sneeze, our nostrils expel the irritating particles.

15:00It could be dust, flowers, pepper bottle and pets.

15:07You can also sneeze a lot when you are suffering from cold as the lining of your nose is swollen.

15:17Sneezing can send tiny particles speeding out of your nose at up to 100 miles per hour.

15:29So what's the process?

15:32When the inside of your nose gets a tickle,

15:35a message is sent to a special part of your brain.

15:39and the brain sends a message to all the muscles that have to work together to sneeze.

15:47Did you realize that you always close your eyes when you sneeze?

15:52Really?

15:54Achy! Achy!

15:57Yes, you are right!

16:09I can't see anything Tia.

16:21Wait, I'll look for the torch.

16:29Oh, thank God!

16:30But Tia, why is it that we can't see in the dark and only in light?

16:39That's because Tofu,

16:41in order to see the eyes must receive light

16:45and darkness is the absence of light.

16:47I didn't get you Tia.

16:52Most of the objects we see around us are visible by reflected light,

17:00reflected sunlight or reflected artificial light.

17:06You are able to see these objects because light reflects

17:10and this reflected light is what becomes a mirror image in our eyes.

17:16Since darkness is the absence of light,

17:20there is no light in the darkness to be reflected from chairs,

17:25tables or people to our eyes and therefore we cannot see these objects.

17:32But we are able to see in the dark after some time.

17:36Why is that then?

17:37You have probably noticed that it is difficult to see objects inside a house

17:44when you have just come in from the bright sunlight.

17:50After you have been in the house a little while,

17:54your eyes adapt themselves to the dimmer light

17:58and you can see perfectly well.

18:00Oh, thank God!

18:08We have torches when it gets dark.

18:28Tofu, are you alright?

18:30No, just a hiccup.

18:36But why do we get hiccups?

18:39Hiccups are funny ones.

18:41Most simple cases of hiccups come after eating or drinking

18:46too much or too quickly.

18:48You must be wondering where these funny noises are coming from.

18:52The part to be blamed is your diaphragm.

18:55This is a dome-shaped muscle at the bottom of your chest.

19:02And all hiccups start here.

19:05The diaphragm helps in breathing.

19:07When you inhale, it pulls down to help pull air into the lungs.

19:18When you exhale, the diaphragm relaxes and the air flows out of the lungs back to the nose and mouth.

19:27But sometimes the diaphragm becomes irritated.

19:32When this happens, it pulls down in a jerky way which makes you suck air into your throat.

19:42Suddenly, when the air rushing in hits your voice box, you are left with a big hiccup.

19:48Do you know that almost all cases of hiccups last only a few minutes?

20:02Everyone has their own pet remedy for curing hiccups.

20:06Simply holding your breath is often effective.

20:36You are full of them.

20:37Hence the when you sweep the column towards the attic.

20:39You have to read your mouth, or even here.

20:41You have to read your mouth into the back.

20:43There's a lot of cool things about the shower.

20:44You've told me why you can't do them.

20:46Why do you want to do their soup?

20:47People buying things into the air.

20:48You have to read them through this research.

20:50You need to read them through the kampl庫.

20:52You are saying, you're going to read them.

20:55You're saying now.

20:57You're asking them to read them, you're asking them.

21:00You're asking them to read them, and then you have to read them.

21:02You're asking them to read them in a few minutes.

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