Why do elephants keep crying and shaking their ears throughout the day?

 Why do elephants keep crying and shaking their ears throughout the day?

 You must have always seen that the elephant keeps on moving its ears throughout the day, have you ever wondered why?  In fact, the elephant releases the heat of its giant body out through the ears.

 This work is done by the cells of the ears of the elephant.  This is the reason why African elephants have very big ears, because there is a lot of heat there.  Elephant's eyesight is very poor.  The special thing is that they see less in bright light and more in low light.

 The pupils of the elephant's eyes dry very quickly, due to which they are unable to move their eyes.  In order for the pupils to move easily, it is necessary to keep them moist, which is why the elephant's eye keeps on supplying a fluid, which comes out of the eye when it is more, which we consider as tears.

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What are Lights?

 What are Lights?

 Light is a small amount of energy that can be transported.  A photon, which is an elementary particle and has no real shape.  It can never be divided.  Can only be created and destroyed.

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Why does hail fall?

 Why does hail fall?

 The water of the ponds and the sea evaporates and forms a cloud of rain in the sky and these clouds rain water.  But when the temperature in the sky drops to several degrees below zero, then the moisture present in the air gets condensed i.e. in the form of small droplets of water.  More water freezes on these frozen droplets.  Gradually they take the form of snow balls.  When these balls become too heavy, they start falling down.  While falling, colliding with the hot air of the way, they turn into droplets.  But the thicker balls that do not melt completely fall to the earth in the form of ice balls.  These are what we call ole.

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Why are water droplets round?

 Why are water droplets round?

 When water falls in the form of a drop, the water droplets take a circular shape due to the surface tension.  Surface tension is a specific property of the surface or surface of a fluid.  Due to this property, the surface of a liquid is attracted to another surface (e.g. towards another part of a liquid).  Due to surface tension, the drop of mercury assumes a circular shape.

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How is curd made from milk? & More 3 Facts.

How is curd made from milk?

 Yogurt is formed by the fermentation process of bacteria. Fermentation of lactose forms lactase (lactic acid), which reacts with milk proteins to turn it into curd.

 It also gives it its special texture and characteristic sour taste. Yogurt contains protein, calcium, riboflavin and vitamins etc.

 Why do hurricanes and cyclones occur?

 Due to a sudden decrease in air pressure at a place, there is a possibility of air coming from the place of high air pressure there. Storms, hurricanes, cyclones come at the speed of the oncoming wind.

 How are clouds formed?

 The water of seas, lakes, ponds and rivers rises up as vapor from the heat of the sun. Clouds are formed from this vapor.

 Why is only one side of the Moon visible from Earth?

 It is a small body which is a quarter of the Earth in size. The Moon revolves around the Earth in about 27 days 7 hours 43 minutes 15 seconds and rotates on its axis in the same time, which is why only one side of the Moon is visible from Earth.

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Why is nitrogen gas filled in aircraft tyres?

 

Why is nitrogen gas filled in aircraft tyres?

 Air contains up to 78 percent nitrogen, while 21 percent oxygen and one percent other gases. Nitrogen does not harm rubber,

 While oxygen can damage the tire. Oxygen often causes the tire to lose its elasticity and strength. In such a situation, oxygen attacks the rubber particles, due to which there is a risk of tire burst.

 Nitrogen is cooler than oxygen and is rubber friendly. However, nitrogen is not completely pure. Nitrophils reduce tire inflation and help the tire stay normal. Nitrogen can stay in the tire for a long time, while oxygen runs out quickly.

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What are cyclones, and how are they formed?

 

What are cyclones, and how are they formed?

 Cyclone: ​​A strong storm of warm winds around low atmospheric pressure is called.  In the Southern Hemisphere, these warm winds are known as "cyclones" and move in a clockwise direction.  Whereas in the northern hemisphere these hot winds are called "hurricanes" or "typhoons".  They move in anti-clockwise direction.

 Due to the intense heat of the sun in the sea of ​​hot areas, the air heats up and creates an area of ​​low air pressure.  The air heats up and rises rapidly and becomes saturated with the moisture above, condensing to form clouds.  The moist air moves down and up to fill the void.  As a result, these winds move around the area very quickly, causing heavy rain and thunderstorms along with thunderstorms.

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Why and how do clouds burst?

 Why and how do clouds burst?

 Most of the cloudburst disasters occur in mountainous areas. In such an event, the air laden with heavy moisture hits the steep hills in its path, which leads to the formation of a special type of cloud.

 When the air pushing these moisture-laden clouds upwards weakens, suddenly a torrential rain starts from these clouds, which is called cloud burst. Meaning that special types of clouds are responsible for the bursting of clouds.

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Why do stars twinkle?

 

Why do stars twinkle?

 Seeing the twinkling stars in the sky, we feel as if they are not shining continuously, they stop shining moment by moment.  But there is no such thing.  The stars are always shining the same way.

 Actually, the light emitted from the stars has to face the obstacles existing in the atmosphere before reaching our eyes.  Therefore, their light keeps getting distracted on the way, it does not reach us directly.

 The atmosphere consists of several moving layers of air.  These layers keep changing the path of the light of the stars.  As a result of this, their light sometimes disappears from our sight, sometimes it keeps appearing.  That's why the stars appear twinkling.

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Why does the sun appear white?

 

Why does the sun appear white?

 There are two types of primary colors.  One, the colors of light are red, green and blue.  And the other ones which are the pigments i.e. the colors of the substances.  That is, those which we use in painting etc.  These are red, blue and yellow.  Broadly the difference between these two is in the properties.  One has the ability to add up and the other to decrease.  The primary colors of light are called additive colors and the colors of pigments are called subtractive colors.

 Now understand the difference between these two.  The special thing about the colors available in the form of pigments is that they absorb all the colors when light falls and reflect only that color of which it belongs.  as the sky reflects only blue and

 That's why it appears blue.  Clearly, the tendency of the colors of a substance is that it removes all other colors except the color of the object.  That's why they are called subtractive colors.  On the other hand, colors of light have a different tendency.  Its specialty is that it appears as it is.  If there is red light then there is red colour, if there is green then it is green.  But if any two colors come together, they mix.  If red and green color mix together, then it will appear yellow.  That is, the colors of light have the property of joining.

 Hence they are called additive or additive colours.  Have you ever thought that sunlight appears white to us, but it is a mixture of all the primary colors.  This is the specialty of being an additive, but if you want to make a white color by mixing the primary colors of the substances, then it is not possible.

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Why does sea water appear blue?

 Why does sea water appear blue?

 In simple words, the answer is that blue sky is reflected in the water of the sea, that is why the sea appears blue, as well as it depends on the angle from which the sea is being viewed. All colors are present in sunlight.

 When sunlight hits the sea water and returns, the sea water absorbs most of the color from it. To see this effect, it is necessary to have a huge amount of water, that is why the water in the cup appears colorless instead of blue, the molecules of sea water immediately absorb the red color present in the light, but they completely absorb the blue color. unable to absorb properly.

 As a result, the light reflected from the water has a blue color. And the color of sea water appears blue, as well as dead animals and trees and plants present in the sea, etc., increase the intensity of this blue colour.

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