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10 Interesting science facts that nobody knows | Science Facts For students in English | Amazing facts for kids

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1: - Diesel engine efficiency can be higher than auto engine, why so?
Diesel engine efficiency can be higher than auto engine


10 Interesting science facts that nobody knows | Science Facts For students in English | Amazing facts for kids


1: - Diesel engine efficiency can be higher than auto engine, why so?

The efficiency of a diesel engine can be higher than that of an auto engine because only the air in a diesel engine is compressed, hence the purpose of compressed exhaust may be higher. Because there is no risk of explosion. Petrol vapor mixed air is compressed in auto engines. Therefore, compression cannot be overpriced otherwise the petrol will explode before it becomes permanent.


2: - The sound of the pitcher kept under the tap is estimated by his voice, why?

The sound of the pitcher kept under the tap is estimated by his voice, why?
The sound of the pitcher kept under the tap is estimated by his voice, why?


As the water fills in the pitcher placed under the tap, the length of the air column decreases. This air column acts like a closed argon pipe. In a particular situation, the frequency of vibration of the air column increases. As the frequency increases, the sound becomes louder. The intensity of this sound predicts the filling of the pitcher.


3: - Due to the strong storm, the light roof of the house blows up during the storm, why so?

Due to the strong storm, the light roof of the house blows up during the storm, why so?
Due to the strong storm, the light roof of the house blows up during the storm, why so?


When the thunderstorm flows very fast from the top of the roof, the principle of Bernouli reduces the pressure of the air above the roof significantly. The air inside the room, which has a high pressure, lifts the roof like that. That is why, when a thunderstorm comes, thatch or tin usually flies.


4: - When you keep empty utensils like lota, plate etc. near the ear, the sound of humming comes, why is this?

When you keep empty utensils like lota, plate etc. near the ear, the sound of humming comes, why is this?
When you keep empty utensils like lota, plate etc. near the ear, the sound of humming comes, why is this?


When the particles of air hit the vessel, it vibrates. By vibrating it, particles of air column also vibrate. These particles produce the sound of muttering in the pot of lota, thali etc.


5: - When the airplane flying below passes through the top, sometimes some pictures are seen moving on the TV screen. Why so ?

When the airplane flying below passes through the top, sometimes some pictures are seen moving on the TV screen.
When the airplane flying below passes through the top, sometimes some pictures are seen moving on the TV screen. 


The aircraft flying below reflects the TV signal. Pictures on the TV screen appear to be slightly shaken due to the interference between the direct incoming signal and the reflected signal.


6: - Beautiful colors are seen on a thin layer of soap bubble or a thin layer of oil drop on the surface of water, by white light. Why so ?

Beautiful colors are seen on a thin layer of soap bubble or a thin layer of oil drop on the surface of water, by white light.
Beautiful colors are seen on a thin layer of soap bubble or a thin layer of oil drop on the surface of water, by white light. 


Reflected rays from the upper surface and lower surface of soap bubbles and thin layer of oil droplet interfere with each other. Because of which we have to make the layer look colorful. Thus, the endpoint depends on the wavelength made of endogenous interference and destructive interference. White light consists of seven colors.


7: - Why do we grow to a certain age?

Why do we grow to a certain age?
Why do we grow to a certain age?


We all have a certain age to grow. The endocrine glands of our body control growth. In particular the thyroid gland, pituitary gland, thymus gland and some penis glands control growth. When the baby is born, its thymus gland is quite large. Fourteen - After the age of fifteen, this gland starts shrinking. At this age, the penis glands look for growth. A person becomes mature by the age of 20 - 22 and after this age his growth stops. After this age, the action of the enlarging glands slows down. That's why humans grow to a certain age. The rate of increase varies from season to season. Children grow faster in summer than winter.


8:- Why do dogs bark more at night?

Why do dogs bark more at night?
Why do dogs bark more at night?


The dog is a loyal animal. Its smelling power is so high and it can detect 2 lakh times even mild smell. It secures the sound and smell of any creature in the brain nerve. Upon smelling this smell again, the image of that creature is secured in its brain nerves.

If the smell of sweat or the utterance of any creature is felt in the silence of the night, it quickly affects the brain nerve due to the environment being quiet. The same smell or the sound of the speech makes the dog feel less in the din of the day. Actually, there is heat in the atmosphere due to sunlight during the day, in which the smell of sweat of any creature evaporates quickly. There is no sunlight at night. That is why the dog quickly engulfs the smell of animals in its brain. This is why the dog becomes more alert at night and barks a little.


9: - Why does the red wavelength first appear when the temperature of an object is gradually increased?

Why does the red wavelength first appear when the temperature of an object is gradually increased?
Why does the red wavelength first appear when the temperature of an object is gradually increased?


The red color wavelength is the highest in the field of view. When heating an object, it emits radiation wavelengths of larger wavelengths. That is why on heating the first things appear red.


10: - The shadow of birds flying high in the sky does not appear on the earth, why?

The shadow of birds flying high in the sky does not appear on the earth, why?
The shadow of birds flying high in the sky does not appear on the earth, why?


The shadow of birds flying at high altitude in the sky is not visible on the earth because when the light producer is much larger than an opaque object, the shadow of that object is formed only for a certain distance. The light-producing Sun is much larger than birds and its distance from Earth is greater. That is why the shadow of birds does not fall on the earth.

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