GIS Cartography and Visualization 2

Question 1

Which map projection preserves area (equal-area) across the entire map?

Accepted Answer

Albers Equal-Area Conic

Answer

Albers Equal-Area Conic is a standard equal-area projection used widely for mid-latitude regions like the contiguous US.

Question 2

A cartographer wants to show population density using graduated colors from light to dark. This technique is called:

Accepted Answer

Choropleth map

Answer

A choropleth map uses color gradations to represent data values aggregated within enumeration units such as counties or states.

Question 3

What is the purpose of a map graticule?

Accepted Answer

To show latitude and longitude grid lines

Answer

A graticule is the network of parallels and meridians drawn on a map to show geographic coordinates.

Question 4

Which visual variable is most effective for representing ordered, quantitative differences in map data?

Accepted Answer

Value (lightness)

Answer

Value (lightness/darkness) effectively communicates ordered magnitude differences, making it ideal for quantitative thematic maps.

Question 5

A map with a scale of 1:24,000 means:

Accepted Answer

1 inch on the map equals 24,000 inches on the ground

Answer

A representative fraction of 1:24,000 means one unit of measurement on the map equals 24,000 of the same units in reality.

GIS - Geographic Information System Practice Test