AP Human Geography Unit 1: Geographic Information, Map Projections, and Spatial Concepts

Types of Maps and Geographic Information

• Learning Objective IMP-1.A.1: Types of maps include reference maps and thematic maps.

• Thematic Maps:

  • Definition: A map that portrays or emphasizes a particular theme or topic.

  • Examples:

  • Chloropleth maps

  • Dot maps

  • Isoline maps

  • Graduated symbol maps

• Reference Maps:

  • Definition: A map that shows where something is in space by displaying geographical data and political data.

  • Examples:

  • Political maps

  • Physical maps

• Uses and Functions of Map Types:

  • Helps individuals understand the spatial distribution of data.

  • Allows users to comprehend geographic patterns that data may form.

  • Serves as an effective tool to investigate correlations between data in two different places.

Map Projections and Spatial Distortion

• Learning Objective IMP-1.A.3: All maps are selective in information; map projections inevitably distort spatial relationships in shape, area, distance, and direction.

• Definition of Map Projections: Representation of three-dimensional ($3D$) objects in two dimensions ($2D$), or any method used to represent the world in $2D$.

• Distortion Principles (SADD):

  • All map projections distort the Earth's surface across four fundamental properties, categorized by the acronym SADD:

  • Scale

  • Area

  • Distance

  • Direction

• Robinson Projection:

  • Benefits: Appears globe-like and "real-like"; accurately displays most sizes, distances, and shapes.

  • Purpose: Commonly utilized in educational settings such as school classrooms and atlases.

  • Distortion / Limitations: Less accurate at the poles; provides imprecise measurements; cannot be used for navigation.

• Mercator Projection:

  • Benefits: Displays true direction; ideal for navigation; features $90^\circ$ angles and straight lines of longitude and latitude.

  • Purpose: Rated as the best map projection for nautical use.

Spatial Patterns, Distance, and Direction

• LPGALearning Objective IMP-1.A.2: Types of spatial patterns represented on maps include absolute and relative distance and direction, clustering, dispersal, and elevation.

• Spatial Movement Principle: All spatial topics relate to space and how individuals maneuver through it or how objects are placed within it.

• Absolute Distance:

  • Definition: Distance that can be counted using a standard unit of precise measurement.

  • Example: It takes exactly $5.9\,\text{miles}$ to drive to duPont Manual High School from Louisville Male.

• Relative Distance:

  • Definition: Distance that cannot be counted using a standard unit of measurement; it is imprecise.

  • Example: It takes about $25\,\text{minutes}$ to travel from the White Blossom Neighborhood to duPont Manual High School.

• Absolute Direction:

  • Definition: Directional system used to interpret maps by relying on standard directional points.

  • Components: Utilizes North, South, East, and West (the Cardinal Directions).

  • Example: duPont Manual High School is located southwest of Ralph Wright Natatorium.

• Relative Direction:

  • Definition: Imprecise terms used to describe direction based on relative position.

  • Components: Terms such as left, right, up, and down.

  • Example: Walking out towards the courtyard of duPont Manual High School and turning left for about a block leads to Cardinal Towne.

Methods of Data Collection and Geospatial Systems

• Overarching Purpose: Data collection methods enable individuals to make data-driven decisions and view creative geographic representation in a different light.

• Primary Data Collection Methods & Tools:

  • Census Data: Collects demographic information, population figures, and income statistics.

  • Remote Sensing Systems:

  • Definition: Detecting and monitoring physical characteristics of an area using remote-controlled technologies such as satellites or aircraft without physical contact.

  • Purpose: Collects information over large areas of land; monitors areas of the world that are difficult to explore; informs people with fast and accurate information.

  • Examples: Satellite monitoring and tracking of hurricanes; aircraft scans of an island.

  • OpenStreetMap: A map-making network that acquires data on places around the world.

  • Policy Documents:

  • Definition: Official papers that specify the rules, guidelines, and regulations of a certain place.

  • Information Outcomes: Establishes safety measurements and accessibility requirements.

  • Photographic Interpretation:

  • Definition: The process of examining photographs to identify objects, patterns, or characteristics.

  • Information Outcomes: Used for differentiating land use, agriculture, and settlement.

  • Media Reports:

  • Definition: The communication of ideas and products from a media source to a consumer or listener.

  • Information Outcomes: Details people's interactions and issues across all scales.

  • Travel Narratives:

  • Definition: First-hand written accounts documented in written form.

  • Information Outcomes: Provides eye-witness documentation, social patterns, and land use observations.

  • Satellite Navigation Systems:

  • Definition: Systems that use satellites to provide geospatial positioning on the Earth's surface by using longitude and latitude lines for easy visualization.

Fundamental Spatial Concepts

• Learning Objective PSO-1.A.1: Spatial concepts include absolute and relative location, space, place, flows, distance decay, time-space compression, and pattern.

• Core Spatial Concepts List:

  • Absolute Location

  • Relative Location

  • Space

  • Place

  • Flows

  • Distance Decay

  • Time-Space Compression

  • Pattern