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Ways of Classification The concept of classification can be quite difficult to understand due to the many similarities that exist in what is being classified There are tiny little details that make objects hard to distinguish from one another Classification is a way of sorting out the details and finding ways to distinguish one object from another Classifying things need to exist because that is how we are able to tell things apart For instance our society depends on automobiles to get around There are numerous vehicles that have very little differences In order for us to decide which vehicle to choose we look at the many different options available Cars are classified by the make model size safety equipment and dimensions class and price range to name a few People look at the different cars available based on many different categories It is very important that we classify because when making a choice are can see the differences and choose the right one In Igneous rocks the mineral composition and how they occur classify them The depth of formation tells us whether or not they are intrusive or extrusive Looking at the size of crystals can do this If the crystals are large we can assume that the rock was cooled under the surface and say that it is an intrusive igneous rock On the other hand when looking at a rock that the crystals are too small to be seen with the naked eye we can come to the conclusion that the rock is extrusive cooled above the surface very rapidly and the crystal did not have time to grow For example volcanic glass has crystals that cannot be seen without special equipment The crystals are too small so we assume that rapid cooling took place along with the aid of water When a molten mass of lava beneath the surface cools at a slow rate the crystals grow bigger than
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