Simple Models

February 2007
Science & Children;Feb2007, Vol. 44 Issue 6, Special section p1
Academic Journal
The article provides information about the universe, and some theories of Greek philosophers that are helpful in scientific observations. According to sources, the universe is composed of elements, which have been prevalent for many centuries. It was then proposed by Greek philosophers that these elements include earth, water, air and fire. In addition, other philosophers say that the universe is composed of indivisible objects called atoms, wherein scientists believe have electric charges, which include the positive and negative charges. Key information regarding these theories are further discussed.


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