How many layers does earth actually have?

      There are many answers on this question and it depends on how fine are you wanted it to be. In fact, the atmosphere itself contains many layers of gases. Nevertheless, to keep this as brief and general as possible, many scientists break it down to generally four different layers.

      The first layer of earth would be the atmosphere. Yes, atmosphere. It seems vague on the outside because we cannot step or even leave on the earth's atmosphere and it contains only gases. But please bare in your mind, if there are no atmosphere, how are we as humans going to live? We all breath in oxygen and it contains mostly on our atmosphere besides all of other gases such as carbon dioxide and so on. We are also being protected by the ultra-violet ray because of our atmosphere. Nowadays, we are hearing a lot of news stating that our atmosphere is getting thinner day by day and i am really sure the impacts of this problems is going to be disastrous. Well, we can easily identify the effect if we compare our current global temperature with the past, the one that is causing the melting of ice in the North pole.

      The next layer of earth would be the crust. Where can we see the earth crust? It is the one that we all exist upon and step on it everyday. There are no humans that has ever been beneath it. The earth is really thin and it is the layer that surround the gooey centre of the earth that would be the next layer. Scientists had found out that this layer is actually floating along the layer beneath it which contains the tectonic plates. This is layer is literally and obviously solid as you can see everyday.

      The mantle would be the layer that contains all of the gooey stuffs. The condition of the earth's mantle is so hot and also under much pressure as it makes the structure thick, syrup fudge and not quite completely solid neither liquid. This gooey layer is keep being churned by the heat coming from the deepest layer of the earth.

     Finally, the deepest layer of the earth would be the core. It is kind of a molten ball fully surrounded by iron elements and it is the one that responsible for producing the magnetic field around our earth. It also spins rapidly and in fact, the temperature on this layer can reach to a point that is comparable to the centre of our solar system, the sun. This layer maintain its temperature by an abundant supply of radioactive elements around it.

    I LOVE LEARNING ABOUT OUR EARTH AND I LOVE GEOLOGY.