Exam 29: Geographic Information Systems

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Explain in brief how GIS maps are constructed.

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A GIS map typically consists of layers of individual maps that are placed over one another.One layer might,for example,portray the terrain such as mountains and valleys and slopes.Another layer might portray vegetation,another layer portray streets and highways,another layer buildings,and so forth.Each layer is placed on top of the others.The map that is shown to the user is a composite of several maps.The GIS display manager can add,remove,or reorder layers according to the users' needs.

________ run and maintain the GIS.

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D

When point based spatial data are aggregated into regions and the results depend on how the regions are defined unit problem occurs.

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GIS creates information by manipulating and displaying data in a geospatial context.

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A ________ is a technique for placing locations on the surface on the earth onto a flat surface.

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________ employ GIS to help solve a problem.

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Geospatial data means data that can be ordered in reference to the earth.

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What is a map projection?

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The best geometric model for the surface of the earth is a(n)________.

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________ maps displays colors,shades,or patterns in accordance with category values of underlying data.

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A person who uses Google Maps to find his way to a friend's place is likely to be categorized as a(n)________.

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GIS consist of a blend of external geospatial and relational database data.

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Vector maps lose their fidelity when their size is doubled.

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How does the Military Grid Coordinate System (MGRS)work?

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What is the procedure component of GIS?

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Which of the following functions is rarely performed most GIS applications?

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Vector maps can overcome the deficiencies of raster maps and are easy to create.

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The Military Grid Coordinate System (MGRS)is divided into ________.

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A datum is a set of elevations based on particular values of the earth's ________.

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One application for a geofence is to notify personnel when trucks or other containers are nearing their destination.

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