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map
a symbolic representation of space, which is all the facts and features about a particular spot
reference maps
show mountains, cities, oceans, and elevation
thematic maps
visualize population about a particular topic across space
choropleth map
shows a theme over a particular space using different colors or shading of colors
dot density map
uses a dot to represent a key feature or attribute
cartogram
uses size to compare data
mercater projection
a map that distorts how shape and size of landmasses are represented particularly by the poles
spacial patterns
how and where geographical features occur on the earths surface
absolute distance
can be measured in feet or miles
relative distance
a measurement of the level of social, cultural, or economic similarity or difference between places despite their distance from each other
projection
scientific method of transferring locations on earths surface to a flat map
gall peters projection
a response to mercator
continents are true to size but shape is off
reduces bias by adjusting size
global positioning system (GPS)
a system of 24 satellites that orbit earth 2 times daily and transmit radio signals, it is the basis for map based apps that provide direction and navigation
geographic information system (GIS)
software application for capturing, storing, and displaying data related to positions one earths surface, allows the raps manipulation of geospatial data for problem solving and research
remote sensing
acquisition of data about the earths surface using satellites, aircraft, or drones. rather than physical touch
ex: landsat and Ariel photography
spatial information can come from:
written accounts
field observations
media reports
travel narritives
policy documents'
personal interviews
landscape analysis
flow
the movement of people,ideas,goods,services across space driving globalization and interconnectedness
ex: migration patterns and spread of culture
distance decay
interactions between two places decreases as the distance between them increases
friction of distance
the cost, time, and effort associated with distance
included transportation cost and travel time
explains why distance decay happens
space-time compression
advances in transportation and communication technologies make distance feel more short and the world more interconnected
diffusion
the pattern by which a phenomenon such as the movement of people or their idea, technologies, or preferences spr4ead from one location to another through space and time
expansion diffusion
occurs when ideas or practices spread in a snowballing process, so that the total number of knowers or users and the areas of occurrence increas
hierarchical expansion
occurs when ideas leapfrog from one influential person, community, or city to another bypassing other persons, communities or rural areas
contaigious expansion
involves the wavelike spread of ideas in the manner of contagious disease or a forest fire moving throughout space without regard for hierarchy
stimulus expansion
occurs when a specific trait is rejected but the underlying idea is accepted
relocation diffusion
occurs when individuals or groups with a particular idea or practice migrate form one location to another, thereby bringing the idea or practice to their new homeland
ex: spread of religion, languages and dialects