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Why Adfina dress more wool cotton dress ? .
Because cotton efficient conductor of heat , and then it is less strictly wool to dissipate body heat
Why does not contain salt water rain , with it coming down from the clouds formed evaporation of sea water ?
Because sea water turns to steam alone , do not salt it.
Why intense cold in the high mountains , with it closer to the sun than the valleys and coasts ?
Because the surface of the earth is a good conductor of heat , it is so. As a huge reservoir to heat the sunlight falling on it. The higher the mountain , it is a small part of the surface of the earth , there is no Akharen only a small amount of heat. This on the one hand and on the other hand increase the density of the air at the surface of the earth and in the neighborhood , and thus constitutes a heavy air barrier prevents heat from spreading , for being a poor conductor of heat . The air around the top of the mountains , it is low-density , and then spread to the stored heat of inhibitor -free conditions . This is precisely the case of the slave dress , it is less protection for us from the cold .
Why is iron in the coldest winter of wood?
Because iron is a good conductor of heat , immediately takes the heat of the hand , and the wood is a heat insulator .
Why is summer in Brazil in the winter time we have ?
Because Brazil is located in the southern hemisphere , and we soak in the northern half . Since the land is taken form rounded , the sun 's rays fall off in the summer to close to the vertical line , while located on Brazil and other countries of the southern hemisphere toward the farther from the vertical line .
Why change the color of the sea?
Because the Black Sea in the total darkness of the night , in the daytime , a mostly blue , the reflection of the blue sky and it becomes gray if the clouds reflected that color . Be green, close to the coast , especially if carried out into the sunlight , shallow waters , and is reflected from its bottom to the eye of the beholder .
Why do you hear the thunder after the appearance of lightning , with occurrence at once ? .
Because the speed of light / 300005 / km / s , while the speed of sound is / 345 / m / s .
Why do we see the sky blue ?
Because the atmosphere billions of solid particles with the exact dimensions , which did not reflect the whiteness of sunlight only blue. Otherwise, the sky was black in the daytime .
Why do we see the sunlight red if Ogmdhana our eyes ?
Because whites sunlight performs blood to our eyelids , it reflects not only the color red .
Why do we see the film moving pictures , with the fact that the film is a composite of still images ? .
Because Pictures film coming in front of our eyes the number up to about sixteen frames per second . The fact that the image of everything you see , its impact remains in the retina of the eye to the tenth of a second , Viohm all of us , that every two consecutive terms in the film , one image shows a moving eye of the beholder .
Why is estimated that conform to the fly on the ceiling of a room, her head upside down ?
Because of the forces of adhesion ( legs containing adhesive )
Why can a bird to fly , with being heavier than air ? .
Because it contains feathers , which contains spaces
This question reminds me of the principle of Archimedes and ship
Why not sink armored with being made of steel ? .
Because they are hollow , and combine a large amount of air , Vthaglha with that air is lighter than the weight of the water. And all can not be armored to dive into the water , to just above the line supplies a decree on its sides and only sank .
Why does not implement the protective cloak of the water from the rain?
Because it is made from the fabric soaking in a bowl containing the dissolved rubber , and thus plugging holes every minute , which prevents water from influence.
Why called the pencil that name, with being a non-factory of a pencil ? .
Because the pencils were manufactured in the Middle Ages of a thin rod of lead , in leather sheath . Then made of graphite rod surrounded by a wooden cover . Graphite is a type of coal , severe laxity .
Why not Athbll duck feather in the water?
Benefits viscosity ( lubrication ) because to him, next to his guilt , glands secrete an oily substance spread on the feathers and protect it from herbs grow .
Why falling piece of metal quickly , and a piece of fabric equal to the weight, leisurely ? .
Because the speed of the fall of all things on earth is one , but the air resistance of the crash vary according to the forms. It is clear that those most very resistant fabric with a piece of them with a piece of metal
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