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Reading & interpreting maps notes

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  • 1. Reading & Interpreting Maps 9/28-29/11
  • 2. Common Types of Maps
    • General Reference – ‘compromise’ maps that show world layout
    • Projections – transfer the round globe to a flat paper to show true area, distance, shape, direction, etc.
    • Charting maps – used for navigation
    • Topical Maps – focus on a single topic
    • Cartograms – show statistics
    • Topographic Maps! – Show elevation and physical features of land (natural and manmade)
  • 3. Hemispheres - using the equator and prime meridian, the world is divided into 4 hemispheres – North/South, East/West
  • 4. Compass
    • A compass is a tool that helps the user know what direction one is headed.
    • On a map, a compass or a compass rose helps the user locate these directions.
    • There are four cardinal directions on a compass - North, South, East & West. In between are the directions northeast, northwest, southeast, southwest.
  • 5. Compass Rose
    • The needle on a compass is magnetized to point to the earth's north magnetic pole.
    • The Magnetic North Pole strays slightly from True North, the point where Earth’s center axis is.
    • The difference between these 2 points is called Magnetic Declination
    Source: http://aerocompass.larc.nasa.gov
  • 6. Scale
    • Maps are made to scale; that is, there is a direct connection between a unit of measurement on the map and the actual distance.
    • For example, each inch on the map represents one mile on Earth. So, a map of a town would show a mile-long strip of fast food joints and auto dealers in one inch.
  • 7. Scale
  • 8. Time Zones
    • The Earth is divided into 24 time zones, corresponding to 24 hours in a day.
    • As the earth rotates, the sun shines in different areas, moving from east to west during the course of a day.
    • Places that have the same longitude will be in the same time zone.
  • 9.  
  • 10. Map Legends
    • The legend is the key to unlocking the secrets of a map. Objects or colors in the legend represent something on the map.
    Religions Legend
  • 11. Can you understand this legend?
  • 12. Age Expectancy Legend
  • 13. Topographic Maps
    • Use Contour Lines to show Physical Relief and elevations.