The implementation of the related benefits, in turn, demands of the Geoprocessamento biggest relation with the modeling. Moura (2003) detaches that models are attempts of representation simplified of the reality, beyond important steps in the search of answers on correlations and behaviors of ambient 0 variable; if developed from great generalization they result in poor simplificaes of the space reality, but if constructed in accordance with logical adjusted to the complexity, they make possible significant profit of knowledge. According to Abreu and Abreu (2003), the construction of models is an attempt to reproduce the attributes most important of a situation without control conditions, being basic for the learning process. The construction and test of theories in precision models are carried through by means of algorithmic and mathematical languages, not only in Geography, but also in other social sciences that have necessities of quantification and uses the statistical Mathematics and techniques in its processes of construction of the knowledge. In relation its structure, in accordance with Days and Baptist (2008), the space, natural or constructed elements, are represented in a System of Geographic Information, from determined scale, by means of three basic geometric entities: the point, the line and the polygon. In a small scale, as 1:1.000,000, a tank of storage of oil in a refinery is represented only by a point, a time that, in this level of geographic representation, very great elements only appear as lines or polygons, has seen highways or the urban limits of a city. Extended the scale for 1:10.000, the detailing level also will increase, making with that elements before represented by simple points, lines straight lines or polygons little defined, present a form next to the Real. Finally, the form can be detached that as the data are organized in a System of Geographic Information it is similar to the exercises of Basic Ensino, in which maps are produced with semitransparent papers, that present, for time, one alone different subject as hydrography, highways or vegetation, what in a SIG it is called layer.