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  • Can you guess the title of my next video?

  • Hurry up.

  • Write your guess in the comments section below.

  • Why do dead whales explode?

  • Coz there are thousands of firecrackers in their bodies!!

  • Oh!!

  • Stop bluffing!!

  • When a dead whale accidentally gets washed up on a beach.

  • It begins to decompose as it is not eaten up by sharks or other fishes.

  • During decomposition, various gases like methane and carbon dioxide are produced within its body.

  • But since there is a thick layer of blubber under the skin of whales, the gases cannot escape out.

  • Thus, they begin to build up inside the whale's body, causing it to bloat.

  • Now such gases are also produced in other animals after their death.

  • But since the body of a whale is large, it produces more gases, thus increasing the pressure in its body.

  • Eventually, due to the increased pressure, the accumulated gases, tissues, flesh, etc.

  • Forcefully come out through weak spots, thus creating an explosion.

  • Hence, it is always advised to not stand or sit on a dead whale.

  • Because it might lead to increased pressure at weak spots, thus causing an explosion.

  • How do dolphins sleep?

  • By covering their face with fins!!

  • Nooo!!

  • Like humans, dolphins are mammals.

  • They breathe through lungs.

  • Hence, dolphins need to come up to the surface of water at regular intervals to breathe.

  • Also, dolphins have to protect themselves from dangerous predators.

  • Hence, they always need to be alert.

  • Just like security guards, right??

  • Oh!!

  • Just listen!!

  • Each eye of a dolphin is directly connected to the opposite hemisphere of the brain.

  • Now, while sleeping, a dolphin shuts down one hemisphere and the opposite eye.

  • In the meantime, the other active hemisphere keeps track of internal bodily functions like breathing.

  • The open eye looks out for predators.

  • After 2 to 4 hours, the dolphin swaps the sleeping task.

  • It awakens the closed eye and resting hemisphere, and shuts down the active hemisphere and the open eye.

  • This type of sleep is called unihemispheric slow-wave sleep.

  • Why is dry ice so dangerous?

  • Maybe because it is made by devils!!

  • Naahhh!!

  • Dry ice is basically solid carbon dioxide.

  • The surface temperature of a dry ice block is about -78 degrees Celsius or -109 degrees Fahrenheit.

  • This means it is much cooler than ordinary ice which is made up of water.

  • If dry ice comes in contact with our skin, our cells begin to freeze and die within seconds, thus giving us severe frostbite.

  • In addition to this, storing dry ice in airtight containers can be dangerous.

  • But why??

  • This is because dry ice sublimates, i.e., it directly gets converted from solid state to gaseous state.

  • Hence, in airtight containers.

  • The gas produced can build up and exert pressure on the walls of container which can lead to a dangerous explosion.

  • Why do we stretch in the morning?

  • So that we can sleep for two more hours!!

  • Naahhh!!

  • Wait!!

  • I'll explain!!

  • When we wake up in the morning, we yawn and stretch our arms and legs.

  • This coordinated yawning and stretching is referred to as pandiculation.

  • I thought it is referred to as calculation!!

  • Hahaha!!

  • Ohh!!

  • Just listen!!

  • When we are asleep, we don't perform any activities.

  • Hence, our heart rate becomes slow and the blood flow is decreased.

  • Also, as many people lie in the same position for long hours, their muscles become stiff and tight.

  • Thus, a good stretch in the morning awakens our body.

  • It brings our heart rate back to normal, improving the blood flow to various body parts.

  • Stretching also loosens and realigns our stiff muscles, making them more flexible and ready for the day ahead.

  • Topic: Wavelength

  • Why red is used as a danger signal?

  • Oh well!!

  • Coz my teacher said so!!

  • As usual, you are wrong!!

  • The major reason for red to be used as a danger signal is its wavelength.

  • Ya ya!!

  • I know!!

  • Wavelength is the distance between two sea waves!!

  • Nooo!!

  • In the wave theory of light, the distance between successive crests or troughs is called wavelength.

  • Longer the wavelength, lesser will be the scattering of light.

  • Now, among the colors of visible light, red has the longest wavelength.

  • Hence, it is least scattered by the atmospheric particles.

  • As a result, whether it is fog or smoke, red light passes comparatively easily through them.

  • Thus, it can be seen from maximum distance, making red color the right choice to convey any danger.

It's AumSum Time

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為什麼死鯨會爆炸?| 鯨魚 (Why do Dead Whales Explode? | #aumsum)

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    AumSum 發佈於 2021 年 01 月 14 日
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