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Geographical Lines and Mapping

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Presentation on theme: "Geographical Lines and Mapping"— Presentation transcript:

1 Geographical Lines and Mapping

2 Maps A flat representation of a round surface
Will always show some sort of distortion (Greenland) Always contain: Legend/Key: explains symbols on the map Scale: what the distance on the map equals in “real life” Ex: 1: 24,000in

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4 Determining Location Latitude: distance North or South of the equator in degrees Equator= 0 Poles= 90 Lines run east and west Longitude: distance to the east or west of the Prime Meridian (Greenwich, England) in degrees Prime Meridian= 0 International Date Line= 180 Lines run north and south

5 Latitude, Longitude, Prime Meridian

6 International Date Line

7 Projection Maps

8 Time Zones Earth is divided into 24 time zones
Due to Earth’s rotation and 24 hours per day Will not cut a city in half The 180 meridian is the International Date Line- the transition line for calendar days Each time zone is 15 degrees of longitude 15 x 24= 360 

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10 Topographic Maps Shows 3 dimensions
Contour lines- all points on line have same elevation Index contour- 5th line of every contour line that tells elevation Contour interval- change in elevation between 2 contour lines Hachure mark- shows a depression in the land

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13 Can you match the map with the landform?

14 Topographic Profiling
Helps produce a side view of a landform on a topographic map Done by drawing a straight line across area being profiled and then dropping the lines down below the map to create the image Helps to start in the center and work your way out

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16 Remote sensing Remote sensing is the acquisition of information about an object or phenomenon, without making physical contact with the object Ex- satellites, SONAR, RADAR, thermal imaging, electromagnetic spectrum

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