Most mix-ups happen when two words sit next to each other. These are the 4 pairs
worth practicing apart. The 2 marked most confused are the ones the course
itself flags, or that sit closest together.
Cover the right-hand column with your hand, read the left definition, and say which term it
is out loud before you look. Then swap sides.
most confused
GIS
Computer system that collects, organizes, analyzes, and displays facts that have a location.
vs
GPS
A tool that finds where you are. GIS can use GPS as one data source.
How to tellGPS is a locator. GIS is the whole stacking-and-deciding system. The lesson's EMS map is GIS, not 'they used GPS and stopped there.'
Landsat
NASA satellites doing remote sensing of Earth.
vs
traffic camera
A ground device that can also feed GIS, for flow maps and commute pictures.
How to tellBoth are data sources. Landsat is the named program on the study sheet. Cameras are one of the four-or-more list.
most confused
old navigation map
Main job: get from A to B.
vs
GIS map
Can show crime, demographics, call volumes, house prices, whether a zone is working.
How to tellPage 6's contrast. Same Earth, wider job.
spider diagram
Lines from EMS stations to each call.
vs
zone map
Colored regions each unit is assigned to cover.
How to tellGIS stacks them. The question is whether the spider lines stay inside the colors.
If you only remember one thingDemography is the study; demographics are the data. Population is how
many; density is how packed. Deviance is society rejecting you; a
counterculture is a group rejecting society. Culture shock is the feeling;
acculturation is the adjusting.
