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GIS UNH Exam 1 2022 with complete solution

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GIS UNH Exam 1 2022 with complete solution The G in GIS stands for -Answer- Geographic The most important component of a GIS is -Answer- People Give examples of raster GIS -Answer- Digital Satellite imagery, a bunch of pixels, equal area cells or grids GIS data in vector format includes what? -Answer- Lines, Polygons, and Points The use of spatial data or applied geography has been around -Answer- For over 3000 years What is a Geodesy -Answer- The science of measuring the shape of the earth What is the best term to describe the shape of the earth -Answer- Geoid The 0 degree line of longitude is called -Answer- The prime meridian A datum is -Answer- an established standard from which measurements are made What does a map projection do? -Answer- Takes a 3D earth and creates a 2D map True or False: A GIS is an exact replication of real world phenomena -Answer- False Cartographic objects in a GIS are typically define by what two distinct types of data -Answer- attribute & spatial Which GIS data format is more visually pleasing but more computationally complex -Answer- Vector data Why are there so many more raster data encoding (compression) methods? -Answer- Raster data takes up much more storage space True or false: Converting between raster and vector format has no impact on the actual GIS layer -Answer- False What is a map scale -Answer- A unitless ratio: Map distance/ground distance True or false: Digitizing is a simple task and can be performed by anyone given very little training -Answer- False True or false: Early in the history of GIS tremendous effort was put into entering data (Digitizing) -Answer- True True or false: Digitizing is the process by which coordinates of some spatial data are entered into a GIS -Answer- True What are the three types of digitizing? -Answer- On screen digitizing, manual digitizing of hardcopy data, and scan digitizing What factors contribute to the amount that a map is generalized? -Answer- The final map scale, the resolution/minimum mapping unit, and the purpose of the map Coordinate transformation is also known as -Answer- Registration What places can GIS data in digital format be readily obtained? -Answer- National and International agencies, US federal government, state and local agencies, private companies, non-profit groups, NGOs

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