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ArcGIS Exam 1 Study Guide with Correct Answers |100% Pass
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ArcGIS Exam 1 Study Guide with Correct Answers |100% Pass Definition and Components of GIS - Answer-A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographical data. The five components of GIS= People, Methods ...

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  • October 5, 2024
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FIRST PUBLISH SEPTEMBER 2024




ArcGIS Exam 1 Study Guide with
Correct Answers |100% Pass

Definition and Components of GIS - Answer✔✔-A geographic information system (GIS) is a system

designed to capture, store, manipulate, analyze, manage, and present all types of geographical data.


The five components of GIS= People, Methods and procedures, Data, Hardware, Software


What does GIS do and why is it important? - Answer✔✔-GIS integrates various information and allows us

to see the 'whole'. You can layer things like social factors, biodiversity, engineering, land use, and

environmental considerations all on one map.




Its important because most information has spatial components that we would like to map.


Applications of GIS - Answer✔✔-Geology, Hydrology and water quality, Business, crime(hotspots, ranges,

types), Emergency response managment, etc....


History of GIS - Answer✔✔--Emerged from cartography and was due to advances in scientific studies

that increased the need from mapping different attributes.


-Development of computers in the 1960s allowed the use of spatial analysis and quantitative thematic

mapping in solving spatial problems.


-ESRI is the leading industry for GIS, started in 1960s




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GIS Functionality - Answer✔✔-Not just mapping. GIS can help you find an object, where something is in

relation to something else, how many, how large,


What makes up geospatial data? - Answer✔✔-Location and characteristics of spatial features. ex. a road:

where but also name length, and speed limit.




Aspatial data- only attributes


Geographic Inquiry Process - Answer✔✔-Ask a geographic question


Acquire geographic data


Explore geograaphic data


Analyze geographic data


Act on geographic knowledge


Basic characteristics of GIS data - Answer✔✔-Represent real-world features and their associated

information with maps on a computer.


Maps portray the real world in points, lines, polygons and annotated features.


Points- pole, bore hole, river discharge station.


Lines- river, road, rail, trail.


Polygons- village, town, land parcel.


Annotated features- labels attached to features on a map for more specific information.



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Basic Functions provided by a GIS - Answer✔✔-Data entry: Allows data entry from a variety of sources.


Data management: Provides a means to manage data.


Thematic mapping: Displays data in map/layer form.


Data analysis: Performs data analysis functions for exploring spatial relationships in and between map

layers.


Map layout: Provide map layout functions for creating soft and hard copy maps.


Explain Coordinates - Answer✔✔-Define the spatial location and extent of geographic objects


Pair of numbers that specify a location in reference to an origin


ALL SPATIAL DATA MUST HAVE COORDINATES; that's what makes it spatial!


Describe discrete objects - Answer✔✔-Objects that exist in one place and not in another


Have identifiable boundaries & attributes


Can be present or absent=


Roads


Houses


States


Describe Continuous Data - Answer✔✔-A quantity that exists over the entire map area


Always present; changes in value from place to place (continuously distributed)


Elevation


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Temperature


Precipitation


What are the two main data models in GIS? - Answer✔✔-Vector data model (discrete)


Raster data model (continuous)


Define georeferenced - Answer✔✔-associate something with locations in physical space. When you get

something to line up well in your map


Explain Vector data models - Answer✔✔--Spatial objects are represented as points, lines and polygons.


-Points features represent objects with no dimension.


Well, transmission pole, sampling locality.


-Line features represent objects in one dimension.


Road, rail, river, trail.


-Polygons represent features in two dimensional areas.


Parcel, town, state, lake.


Explain Vector Dimensionality - Answer✔✔-Areas are two dimensional and consist of lines, which are

one-dimensional and consist of points, which are zero dimensional and consist of a coordinate pair.


Vector data model attributes - Answer✔✔-Each feature is linked to an entry in a data table containing

information about the feature- its attributes




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