Chapter 1 Flashcards
Elements of projection
Distance
Size
Shape
Direction
Ways to put scale
Written
Fractions or ratio: map to real life
Graphic
Equal area projection
Relative size of land masses is same
Types of distortion
Eastern and western hemispheres split : interruption
Medians: converge at north and south but not on Map
Robinson: info across oceans, land smaller
Mercator: size towards poles is distorted
Geographic grid is made up of, good for
Imaginary arcs across, parallels and meridians
Telling time
Meridian
North and south poles, longitude
Prime meridian is in Greenwich
All have same length
Parallels
Parallel to equator at right angles to meridians
Derived earths shape and rotation around sun length of daylight and pos. Of stars
How do you identify location
Site, name, situation
Longitude helps in telling…
Time Gmt or Ut master reference for all points on earth
15 degree band of longitude is assigned standard time zone
International dateline
Auckland and Honolulu
West to east add one hour for each time zone
East to west back 24 hours
Why have people moved back dateline
For trade with partners, or to have first sunrise
GIScience
Info gathered from satellite development and analysis of earth
What happens as a result of GIScience
More complex and accurate maps
Remote sensing
Acquiring of info through satellite or other long distance method
Images in digital form
Agriculture, drought
What does GPS do
Defines precise location and contributes to accurate maps
GIS
Computer system
Info stored in layer
GIS helps show if relationships Are
Coincidence or significant
What is essential for geographers to describe similarities and differences
Features