GEOG 360 Midterm Exam | Questions with Verified Answers
Which of the following topological relationships describe the arc-node relationship in the
coverage model?
Connectivity
Which of the following is true about the vector data model?
-The model uses points, lines, and polygons to represent simple spatial features.
-The representation of spatial features using the vector data model depends on map
scale.
-The model uses x-, y-coordinates to store the geometry of spatial features.
Select the following statements that are true about a GIS database:
-Real world data is represented as separate thematic layers
-Data from different thematic layers are combined through analysis
-Thematic layers organize spatial and attribute data
Multipart features are used to represent multiple geographic objects that represent parts
of the same entity
True
A geological map showing bore holes, faults, and rock outcrops that emit radon (in that
order) could be captured into the GIS as:
Points, lines, and areas.
Topological data layers often ease data processing and maintain spatial integrity, at the
cost of more complex data structures.
True
What type of data (nominal, ordinal, or interval/ratio) would an attribute be if it recorded
height of the tallest tree in a city?
Interval/ratio
What type of attribute is human population (the number of people in a state) in a data
layer for the U.S.?
Interval/ratio
What type of attribute is political party of the current governor for a states data layer for
the U.S.?
Nominal
Which of the following is true about a line feature?
- A line feature is made of line segments (arcs).
- A line connects two end points (nodes).
- The shape of a line is defined by arcs connected by vertices.
Choose all of the statements that are true about attribute tables:
-An attribute table is associated with each thematic layer in a vector data model.
-A single row in the attribute table corresponds to each feature
-Each feature is given a unique numeric identifier within the attribute table.
A line digitized in a vector GIS is considered a ___ object.
one dimensional
Match the topological characteristic to the most appropriate answer: Adjacency
Connected polygons
Match the topological characteristic to the most appropriate answer: Connectivity
Line network
Match the topological characteristic to the most appropriate answer: Planar topology
Non-overlapping polygons
Match the topological characteristic to the most appropriate answer: Polygon topology
Right and left sides
You have a spatial data layer for country life expectancy rates, with boundaries and an
attribute table. What type of data (nominal, ordinal, interval/ratio) are rankings for life
expectancy contained in the data table?
Ordinal
In the vector data model, starting and ending points of a line are referred to as nodes,
with vertices representing the intermediate X,Y coordinates in a linear feature.
True
Topology is:
The spatial relationship between features on a map
You have a spatial data layer for Minnesota school districts, with boundaries and an
attribute table. What type of data (nominal, ordinal, interval/ratio) are rankings for
graduation rate, contained in the data table?
Ordinal
The cell coordinate of a raster cell is usually defined as a point at the center of the cell.
True
If a raster has the cell dimension of 30 meters, then the area of a cell in this raster
measures:
900 square meters
A raster with a larger cell dimension has a higher resolution than a raster with a smaller
cell dimension.
False
Raster data structures are able to represent discrete objects more accurately than
vector data structures.
False
If possible, raster cell dimension should be smaller than the distance between the
closest two objects in a point data set because:
Multiple objects may fall in the same cell
Vector data models are typically simpler than raster data models
False
Raster data are typically a more natural and appropriate structure to represent and
analyze networks.
False
Match the data type on the left to the most appropriate characteristic on the right: Byte
256 values
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