GIS Cartography and Visualization 5

Question 1

A map uses circles of varying size to show city populations. This is an example of a:

Accepted Answer

Proportional symbol map

Answer

A proportional symbol map scales symbols (often circles) in area or volume proportionally to the data value they represent.

Question 2

Which map distortion property is preserved by a conformal projection?

Accepted Answer

Shape (local angles)

Answer

Conformal projections preserve local angles and therefore the shape of small features, but distort area at regional scales.

Question 3

What is a 'diverging' color scheme best suited for on a thematic map?

Accepted Answer

Showing data that ranges from a meaningful midpoint (e.g., above/below average)

Answer

Diverging palettes use two contrasting hues that diverge from a neutral midpoint color, highlighting deviations above and below a critical value.

Question 4

What is map 'symbolization' in cartography?

Accepted Answer

The process of selecting and designing graphic symbols to represent geographic features

Answer

Symbolization is the cartographic process of choosing visual variables (color, size, shape) to represent the characteristics of geographic features on a map.

Question 5

Which term describes the smoothing of jagged polygon or polyline boundaries in GIS to improve visual appearance?

Accepted Answer

Smoothing or generalizing

Answer

Smoothing (or simplification) algorithms reduce vertices and soften sharp angles in digitized features, improving cartographic appearance.

GIS - Geographic Information System Practice Test

GIS - Geographic Information System Practice Test

GIS Cartography and Visualization 5