17 Questions
What are the four basic characteristics of a map that can be distorted by different map projections?
Distance, direction, shape, area
Which science is dedicated to the study of the shape and size of the Earth?
Geodesy
Which model or reference surface approximates the shape of the Earth using gravity field?
Geoid
Which of the following is used as a reference for measuring elevations and depths?
Vertical datum
Which type of projection uses mathematical equations to transform globe coordinates to a flat surface?
Cylindrical projection
What is a datum in cartography used for?
Providing a reference point for measurements
Which angular coordinate system does the UTM coordinate system use as its basis?
Latitude and Longitude
How is the orientation of the cylinder changed in map projections to create relatively undistorted regions?
By rotating it along its central axis
In the context of UTM coordinates, what does 'northing' refer to?
The distance north or south of the equator
What is the purpose of a Digital Elevation Model (DEM)?
To represent surface topography in a digital format
In the Universal Transverse Mercator (UTM) coordinate system, how are the zones numbered?
From west to east
What is the shape of the Earth approximated by using an oblate ellipsoid as a reference datum?
Oblate ellipsoid
What transformation occurs during a map projection in converting Earth's curved surface to a flat surface?
Conversion from angular coordinates to Cartesian coordinates
Which type of projection is characterized by a two-dimensional reference surface used to convert locations from a curved surface to a flat surface?
Azimuthal (planar)
What is the main purpose of using an oblate ellipsoid as a datum for the Earth?
To approximate the shape of the Earth
In map projections, what do tangency and secancy refer to?
Points of contact with the reference surface and orientation
Why is an oblate ellipsoid considered a suitable reference datum for the Earth?
To provide a shape approximation for the Earth
Test your knowledge on cylindrical map projections and their variations like Mercator, Transverse Mercator, Oblique Mercator, Plate Carré, and more. Learn about the transformation of globe coordinates to a flat surface using mathematical equations.
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