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Why is there a Hole in the Ozone Layer? + more videos | #aumsum #kids #science #education #children - YouTube
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It's AumSum Time
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Hi guys.
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Can you guess the title of my next video?
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Hurry up.
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Write your guess in the comments section below.
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Why is there a hole in the ozone layer?
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Becasue I punctured it.
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Alright.
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Now listen.
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Normally, an oxygen molecule contains 2 oxygen atoms.
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But in the upper atmosphere, there exists
an oxygen molecule which contains 3 oxygen atoms.
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This molecule is called ozone.
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The ozone molecules form a layer around the earth called the ozone layer.
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This layer absorbs the sun's harmful ultraviolet radiation and thus, protects us.
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But a time came.
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When the production of human-made chemicals like chlorofluorocarbons or CFCs increased a lot.
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These CFCs began to break more and more and more oxygen molecules.
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Thus thinning or depleting the ozone layer.
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This depleting ozone layer is termed as ozone hole.
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However, nowadays due to awareness, the production of CFCs has reduced to a significant amount.
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As a result, the ozone layer is slowly but
surely getting replenished.
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A bear walks around a house that has four walls.
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All the walls face south.
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Can you guess the color of the bear?
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What kind of question is that?
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How is the color of a bear linked to a house?
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Think.
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I have no idea man.
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The color of the bear is white.
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Confused?
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Obviously.
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Let me explain.
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The Earth is a sphere.
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At any point on the Earth.
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Any direction will "point towards the antipode," that is, the point directly opposite on the sphere.
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Now, when the house is exactly at the north pole.
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Every direction will point directly opposite to the north pole on the sphere, which is south.
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That's why all the walls face south.
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Now, in the north pole, we can only find polar bears which are white in color.
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Hence, the color of the bear is white.
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Why do people grind their teeth?
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Because they are always hungry.
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No.
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Some people may grind their teeth unknowingly only during the night.
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While others may grind their teeth during
the daytime as well.
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The medical term for teeth grinding is called bruxism.
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What?
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It also has a medical term.
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Indeed.
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Bruxism can be caused due to stress, anxiety, medications, etc.
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However, according to a research, bruxism
is also common in people who snore.
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Snoring occurs when the muscles like uvula, tongue, etc.
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Relax and fall at the back of our throat, blocking the air pathway and thus, causing difficulty in breathing.
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Now, it is bruxism that reopens the air pathway.
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Bruxism or grinding of teeth causes movement in the relaxed muscles.
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Due to which the muscles return back to their original position, thus opening the air pathway.
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Topic: Myopia.
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What causes nearsightedness?
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Excess staring at junk food.
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No.
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When light from an object enters our eyes, our eye lens bends it such that the image is formed on the retina.
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However in some people, this image is formed before the retina.
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Such defect is called nearsightedness or myopia.
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A person with myopia cannot see distant objects clearly.
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But why?
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Wait, I'll explain.
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To focus image of a distant object on the
retina, our eye lens becomes thin.
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However, in people with myopia, the lens cannot become adequately thin.
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Thus forming image before the retina and making it difficult to see.
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Moreover, when the eyeball is elongated more than normal, the distance between the lens.
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The retina increases resulting in the
formation of image before the retina.
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Thus causing difficulty in seeing the distant object.
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What is diabetes?
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A rare diamond.
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No.
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Diabetes is a disease in which glucose or
sugar levels in our blood remain high.
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Is it higher than the Statue of Liberty?
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No.
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Most of our food is converted into glucose
and released into the bloodstream.
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Then, our pancreas makes insulin.
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Insulin helps glucose get into the cells.
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However, in some people, the insulin production is inadequate or it is not used well.
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Hence, glucose stays and builds up in the
blood, increasing the blood glucose level.
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Thus, causing diabetes.
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There are three main types of diabetes.
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Diabetes type 1 occurs when our immune cells destroy the cells in pancreas which make insulin.
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Resulting in less or no insulin production.
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Diabetes type 2 occurs when pancreas cannot produce enough insulin.
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Or our bodies cannot use it well.
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Gestational diabetes occurs in pregnant women.
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Diabetes can lead to blindness, kidney failure, heart attacks, etc.
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Hence, diabetic people should always maintain their blood glucose levels.
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