We see the sun in the sky everyday, it's color is red when it is rising or setting and it's colour became bright white at noon. This happens due to the passing of sun rays through different atmosphere, and angle.
  Sun is the closest star to the earth, it's size is equals to 400× size of the earth.
  You see the sun everyday, but you have ever imagined, how sun is important to you or us? And what happens when there is no sun in sky?



Importance of sun is not little, it is too much that we can't imagine at a time. So just find the importance of sun by reading this post.

1. So, the first of all sun is essential for the growth of plant. If there is no plant on earth means there no animals on earth because plants are primary consumers which converts the raw into food by the process known as 'Photosynthesis'. Here is the formula: 6H2O + 6CO2 + Energy (sunlight) = C6 H12 O6+ + O2. As you seen in the following reaction, it forms Glucose (C6 H12 O6) + Oxygen (O2).

Which is used by animals to form energy.
C6 H12 O6 + O6 = Energy + 6CO2 + H2O
In this way energy circulated again and again. You have heard about food chain, this shows how organisms are interdependent on each other for food. Lets see the very simple example of food chain: Grass is eaten by deer and deer is eaten by Lion and when lion died the body of lion is eaten by wolf, eagle or many animals even microorganisms, when microorganisms decompose the boy it produces methane,CO2 and other gases which will dissolve in atmosphere, and the remaining part will dissolve in soil and again it is used by plants. And again deer will eat and same process will repeat.

2. Second importance is sun rays is also responsible for formation of Ozone layer over the earth. Ozone layer is protective gaseous layer over the earth which skips the UV rays of the sun to enter inside the biosphere of the earth.

O2 + UV ray forms 2O
 And
 O + O2 forms O3 (Ozone gas)

3. The third one is " Transportation of water all over the earth surfaces ". Sun is also responsible for distributing the water all over the earth. You have heard about water cycle, when Ice caps and glacier melts due to the Sun light it converted into small stream which goes down and down from hill and form a river. And river collects those water throughout the place where it goes and finally it fell in the sea. And again when sun light warmed up the sea and ocean water, then it converted into vapour and goes up and up and forms cloud by the process known as condensation, because there is low temperature at that height the condenced water again converted into water and fell on earth in the form of rain and snow and sometimes times ice also. Rain water which fell in cities and villages or any other areas is collected by drainage system which is connected to river. Freezing and melting of the glaciers is due to the revolution of the earth, which cause the changing of seasons on the earth. But here a new question arise, How those clouds transported to different regions? You will got the answer of this question in the next point.

4. Sun rays are also responsible for blowing of winds. When air of a place becomes warm due to sunlight it rays up because it becomes lighter than the air of place where is temperature is less in comparison to this place. The area near the sea have less temperature because water heated up late than earth, and water cooled down late than earth. This is cause of sea breeze during day and land breeze during night. When air rises up as you know when we goes up and up over earth surface then temperature will go decrease, that's why some air which rised up due to sun rays again came down due to gravity and again light air will goes up.
With the following points, we can say that their is a great importance of sun to complete every cycle of life on earth.

Need of sunlight in man-made appliances. If I say their is no light on earth if their is no sun. Then many people say, 'no I have worlds brightest flash light or electricity. But you really thinks without sunlight these energy will last long for a long time. Well it is not possible because we have not very much resource on our planet. As you know that hydroelectricity is the biggest source of electricity for us, we cannot generate it without water. But How electricity forms with water? And answer is ' When water is collected in dam, collected water possess high potential energy and when it flow through narrow path it possess high thrust, and water with high thrust rotate the dynmo motor rapidly which leads in formation of electricity and as it is generated by using the power of water that's why it is called 'Hydroelectricity'.



But still we doesn't found the use of sunlight in formation of hydroelectricity. As you know circulation of water on earth is made by sunlight, if there is no sun then there is no circulation of water on earth, and if there is no circulation of water on earth then there is not ang river on earth, and without river there is not any dam, then how we will generate electricity? But still there is one more way to generate electricity. We can rotate the dynmo motors with the help of fossil fuels engine, but did you know there is very few fossil fuels are lefting on earth. Scientists predicted it will maximum last long for next 80 years, if we use it as, we are using it right now and if there is no sun then the use of fossil fuels will increase by more than 50× then it will end in very less time.
Nuclear fission can help us during that condition.
But don't think much more, if there is no sun, then whole earth will freeze down and then their is no life on earth and their is no any matter for finding other resources. Also our Earth will loose it's orbit and will lost in this universe.

This is a short note, which tells us about the importance of sun, if you like this post then please share this post with your family and friends and keep visiting our site.

4 Comments

Alan Edwards said…
A very interesting and informative site, I will bookmark and return later Alan
My blog name said…
Great article. A lot of very interesting facts.

What I really like is the vitamin D we get from the sun. Our winters here in Canada are long and dark. So I really appreciate the summertime when we can be out in the sun for our vitamin D.

Cheers,
Suzanne
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