WGU D199
1. immigrants: people moving into a geographical area
2. emigrants: people moving out of a geographical area
3. net migration: the difference between the number of immigrants and the number
of emigrants for a given geographical area in any given year
4. return migration: permanent return of emigrants to their country of origin
5. travel visas: documents that give temporary permission to enter a country
6. brain drain: a wealthy country's recruiting the "best brains" from a poorer country
by offering higher-paying opportunities
7. brain gain: benefits a receiving country experiences when highly skilled immi-
grants are lured away from their country of origin when they accept higher-paying
opportunities
8. brain waste: situation that occurs when a receiving country fails to take advan-
tage of all the skills of an immigrant population
9. push factors: conditions that encourage an individual to move from a location
10. pull factors: conditions that influence migrants to move to a particular location
11. reference maps: maps used to display important physical elements of a specific
,geographic area, such as countries, rivers, mountains, etc.
12. thematic maps: specialized maps used to understand one particular attribute or
characteristic of a specific geographic area; examples are population maps, weather
maps, and maps illustrating the spread of disease
13. literal maps: maps that strive to display the objective truth about a specific
geographic area
14. figurative maps: maps that use symbols to represent a narrative or point of
view; they are much less concerned with physical accuracy than are literal maps
15. analytical mapping: the use of cartography techniques to uncover and learn
about patterns and trends in a specific geographic area
16. map scale: how the measurement of distance on a map corresponds to the
distance on the ground in the real world
17. representative fraction (RF): a way of describing the scale of a map by using
a ratio
18. small-scale: a way of describing a map with a relatively small RF, where the
various features of the geography appear relatively small
19. large-scale: a way of describing a map with a relatively large RF, where the
various features of the geography appear relatively large
20. coordinates: the points on a specified reference system that define the location
, of a particular place
21. Cartesian coordinate system: a reference system for a plane (a flat surface)
based on the work of mathematician Rene Descartes, using x- and y-axes.