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Mapping the World ► ► Cartographers, or mapmakers, have been making maps of the world for thousands of years. Today’s cartographers use high-tech tools, such as the Global Positioning System (GPS), to create highly detailed and accurate maps.
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Differences Between Maps and Globes
A globe is an accurate, three-dimensional model of the earth.
Maps are less accurate than globes in picturing the earth because they are just two-dimensional
Mapping the World
►Cartographers, or mapmakers, have been making maps of the world for thousands of years.
Today’s cartographers use high-tech tools, such as the Global Positioning System (GPS), to create highly detailed and accurate maps.
Map ProjectionsMap projections show Earth’s curved surface on a flat map
All map projections distort Earth because they are two-dimensional
Robinson projection map commonly used, distorts less than Mercator
Three Kinds of Maps
General reference (Topographic) maps - show natural and human-made features
Thematic maps - focus on specific idea or theme, such as population
Nautical map, or chart, - used to navigate air and water
Picturing GeographyGeographers also use charts
and graphs - charts, graphs can display information more clearly than text
- useful for comparing information
Science of MapmakingScience of Mapmaking► SurveyingSurveying
Observe, Measure, and RecordObserve, Measure, and Record► Remote Sensing Remote Sensing
Landsat-Orbits the earth every 16 daysLandsat-Orbits the earth every 16 days GOES- Gathers images from space for weatherGOES- Gathers images from space for weather
►GIS, GPSGIS, GPS GIS-World digital databaseGIS-World digital database GPS-Originally developed to help military forces know GPS-Originally developed to help military forces know
exactly where they were on the earth’s surface…exactly where they were on the earth’s surface…now???now???
http://www.claseshistoria.com/http://www.claseshistoria.com/bilingue/1eso/earthplanet/bilingue/1eso/earthplanet/
representation-projections.htmlrepresentation-projections.html
http://www.claseshistoria.com/http://www.claseshistoria.com/bilingue/1eso/earthplanet/bilingue/1eso/earthplanet/representation-scale.htmlrepresentation-scale.html
http://www.claseshistoria.com/http://www.claseshistoria.com/bilingue/1eso/earthplanet/bilingue/1eso/earthplanet/representation-types.htmlrepresentation-types.html
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