Chat with AIExam 5: GIS Data Acquisition
Which of the following is considered an automatic digitizing method?
(27) 
VerifiedB
Name the two geoportals maintained by the USGS.
(33) 
Answered by Examlex AI CopilotThe two geoportals maintained by the United States Geological Survey (USGS) are:
1. The National Map Viewer: This geoportal provides access to a wealth of topographic information and a variety of maps and datasets. It allows users to view and download topographic base maps, including US Topo Maps and historical topographic maps.
2. EarthExplorer: This geoportal is a key tool for accessing satellite imagery, aerial photography, and various geospatial data. Users can search through a vast archive of Earth observation data, including data from the Landsat program, which provides moderate-resolution satellite imagery of the Earth's surface.
Both of these geoportals are designed to provide users with comprehensive access to geospatial data, maps, and imagery to support research, planning, and environmental management.
Which of the following organizations has been coordinating the development of the National Spatial Data Infrastructure (NSDI) in the United States?
(43) VerifiedA
The U.S. Census Bureau offers KML files of nation-based and state-based boundaries for download. What is the main application of these files?
(35) Digital orthophotos do not contain image displacement or distortion.
(33) Geotagged photos can be taken with a cell phone as long as the cell phone is GPS-integrated.
(35) Suppose you are asked to convert a paper map to a digital data set. What methods can you use for the task? Briefly describe how each method works.
(29) The scanning method for digitizing involves both rasterization and vectorization. Explain what each process accomplishes.
(40) The spatial resolutions of Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) are approximately:
(41) Which data formats are used by the USGS to deliver vector data?
(35) A clearinghouse is __________, and a geoportal is _________:
(38) Provide an example that illustrates the importance of metadata to GIS users.
(36) What are the spatial resolutions of DEMs available from the USGS?
(26) COGO (Coordinate geometry) can convert ______ into spatial features:
(32) On-screen digitizing has gained its popularity among GIS users. Name two advantages of on-screen digitizing compared to tablet digitizing.
(39) 
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