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  • It's AumSum Time

  • Hi guys.

  • Can you guess the title of my next video.

  • Hurry up.

  • Write your guess in the comments section below.

  • How tall can we grow?

  • I can grow as big as the Eiffel Tower.

  • Stop bluffing.

  • Height is determined by a number of factors.

  • One of them is our genes.

  • We inherit our genes from our parents.

  • Hence, these genes will make us grow approximately as tall as our parents.

  • In addition to this, factors like nutrition, physical health, hormones, etc. also affect our height.

  • Now, if we grow taller than what we are at present.

  • Then we won't be able to support our body's structure efficiently.

  • For this, we would require much larger bones or they need to be made of much stronger material.

  • In addition to this, if we were taller, the amount of blood in our body would be more.

  • Thus making it hard for the heart to pump so much blood.

  • Besides this, the earth's gravity constantly pulls us down.

  • As a result, it prevents us from getting taller.

  • Why do newborn babies get jaundice?

  • I don't know.

  • Each red blood cell in our blood lives for about 120 days.

  • Once it gets old, it is broken down into smaller components.

  • One of them is bilirubin.

  • Bilirubin is a yellowish waste compound.

  • Hence.

  • Our liver removes the bilirubin from our blood which is then excreted by the body through intestines.

  • However, if bilirubin is not removed, its level in the blood starts to rise.

  • Excess bilirubin begins to get deposited in the body tissues.

  • As a result, the skin and white areas of eyes appear yellow, thus causing jaundice.

  • Now, a newborn baby's liver is still developing.

  • Thus, it cannot efficiently remove bilirubin from blood, thus causing it jaundice.

  • Usually, jaundice is normal in babies and will disappear in some days as the baby grows.

  • However, if it doesn't disappear, we should immediately consult a doctor.

  • How do antacids work?

  • They don't work.

  • They are unemployed.

  • You are unbelievable.

  • When we eat food, our stomach secretes hydrochloric acid.

  • This acid helps to digest food.

  • However, sometimes when excess acid is produced, it rises from the stomach .

  • Reaches the esophagus or throat causing acidity or heartburn.

  • Now, in order to neutralize the acid, we take an antacid.

  • Antacids work on a simple chemistry principle, acid plus alkali produces salt and water.

  • Dude.

  • I'm really weak in Mathematics.

  • Don't worry.

  • I'll explain it to you.

  • Antacids contain alkalis like calcium carbonate or aluminum hydroxide.

  • When we take an antacid, the alkali reacts with the hydrochloric acid present in our throat and stomach.

  • Forming salt and water, and thus, neutralizing the acid.

  • In this way, antacids give us relief from heartburn or acidity.

  • Topic: Atmospheric refraction.

  • Why do stars twinkle?

  • Because they blink their eyes.

  • No.

  • The twinkling of stars is due to atmospheric refraction.

  • Atmospheric refraction is the bending of light caused by the earth's atmosphere.

  • I thought atmospheric refraction is the bending of my body due to earth's atmosphere.

  • Please listen.

  • Earth's atmosphere is changing continuously.

  • When the light of a star travels through space towards us.

  • The continuously changing earth's atmosphere.

  • Refracts or bends the light by different amounts and in different directions every moment.

  • When the atmosphere refracts more starlight towards us.

  • The star appears bright and when the atmosphere refracts less starlight, the star appears dim.

  • In this way.

  • The amount of starlight reaching our eyes increases and decreases causing the star to appear twinkling.

  • Topic: Concave mirror.

  • Why is your reflection upside down on a spoon?

  • Looks like you are getting ready to go for a party.

  • Why don't you stand here and then look into the spoon?

  • Don't worry.

  • Your image appeared upside down because of the inward curve of the spoon.

  • The surface of the spoon which is curved inwards acts like a concave mirror.

  • You look confused.

  • Let me explain.

  • A concave mirror is a mirror whose reflecting surface is curved inwards.

  • Being curved inwards, it reflects or bounces back the light rays in a different manner.

  • When you see yourself in a spoon which is like a concave mirror.

  • The light rays from your face fall on the top of the spoon and get reflected downwards.

  • While, the light rays from your feet fall on the bottom of the spoon and get reflected upwards.

  • As a result, you see yourself upside down.

  • Now, the point where all these light rays meet is called the focal point.

  • When you stand beyond this point, only then will you be able to see an inverted image of yourself.

  • However, if you stand before the focal point, the image will look upright.

It's AumSum Time

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B1 中級 美國腔

我們能長多高?| 我們能長多高? (How Tall can we Grow? | #aumsum)

  • 16 1
    Amy.Lin 發佈於 2021 年 01 月 14 日
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