# GIS Questions and Answers – Spatial Referencing System

This set of GIS Multiple Choice Questions & Answers (MCQs) focuses on “Spatial Referencing System”.

1. The first important spatial concept in mapping technology is to:
a) find benchmarks
b) locate objects
c) calculate distances
d) find the water bodies

Explanation: The first important spatial concept in mapping technology is to locate objects with respect to some reference system.

2. Which among the following is one of the main three categories of spatial referencing systems?
a) Geographic Coordinate System
b) Cylindrical Coordinate System
c) Polar Coordinate System
d) Orthogonal Coordinate System

Explanation: There are several methods of spatial referencing systems and they can be grouped into three categories, namely, geographic coordinate systems, rectangular coordinate systems and non-coordinate systems.

3. Which are the factors by which the coordinates of any location on the earth surface are defined in geographic coordinate system?
a) postal codes
b) grids and angles
c) latitude and longitude
d) sun and moon

Explanation: The lines of latitude lie at right angles to lines of longitude, and run parallel to one another. This type of location is called absolute location and it gives a definitive, measurable, and fixed point in space.

4. What is the other name for geographic coordinate system?
a) Rectangular Coordinate System
b) Spherical Grid System
c) Latitude and Longitude System
d) Parallel Coordinate System

Explanation: The lines of latitude run parallel to one another and lie at right angles to lines of longitude. Each line of latitude represents the circle rounding the globe. The circle of greatest circumference is called the equator and will be at equidistant from the poles. This system is also called as spherical grid system.

5. Which is the coordinate referencing system that uses data in two dimensional form to locate object points?
a) Geographic Coordinate System
b) Non-Coordinate System
c) Rectangular Coordinate System
d) Polar Coordinate system

Explanation: Most of the spatial data available by means of remote sensing systems or any other sources of data for use in GIS are in two-dimensional form. This coordinate referencing system to locate any object point is called rectangular coordinate system.

6. Name the coordinate system that provides spatial references using a descriptive code rather than a coordinate.
a) Rectangular Coordinate System
b) Geographic Coordinate system
c) Non-Coordinate System
d) Orthogonal Coordinate System

Explanation: The non-coordinate system provides spatial references using a descriptive code rather than a coordinate, such as, postal codes, which are numeric in nature. Some countries use the non-coordinate system which is alpha numeric in nature.

7. A point may be referred to as being so many kilometres in a given direction from a city, mountain, lake, river mouth, or any other easily located feature on the map. Which special referencing system is this?
a) Non-Coordinate System
b) Geographic Coordinate System
c) Polar Coordinate System
d) Rectangular Coordinate System

Explanation: A point may be referred to as in relation to prominent features like city, mountain, etc. on the map, in non-coordinate system.

8. A set of lines starts at the middle of the earth or equator called parallels, and circle the globe from east to west. What are these parallels?
a) Longitudes
b) Latitudes
c) Meridians
d) Contours

Explanation: Each line of latitude represents the circle rounding the globe. Lines of longitude, called meridians are, drawn from pole to pole.

9. The location of any point on the earth’s surface with reference to rectangular coordinate system is generally termed as relative position. True or False?
a) True
b) False

Explanation: Relative position refers to the location of a place with respect to other locations. Relative position can be expressed in terms of distance, cost or travel time.

10. Which coordinate system uses a three dimensional spherical surface to locate points on Earth?
a) Geographic Coordinate System
b) Polar Coordinate System
c) Rectangular Coordinate System
d) Non-Coordinate System

Explanation: In geographic coordinate system, the coordinates of any location on the earth surface can be defined by latitude and longitude. This system is produced by placing two sets of imaginary lines which are at right angles, around the earth.

Sanfoundry Global Education & Learning Series – GIS.

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