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# Latitude, Longitude, And Scale

## by acavis on Aug 08, 2008

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## Latitude, Longitude, And ScalePresentation Transcript

• Latitude, Longitude, and Scale
• Latitude and Longitude
• Where do these Numbers Come From??
• Latitude and Longitude cont.
• Latitude and Longitude are basically a giant coordinate system.
• Map of Michigan
• Practice Questions
• Degrees, Minutes, and Seconds
• Degree – degrees are marked on a map/globe by the solid lines
• The distance between all lines of longitude is approximately 69 miles
• The distance between lines of latitude are approximately 69 miles at the equator and 0 miles at the poles
• Degrees, Minutes, and Seconds cont.
• Minutes – 1 minute = 1/60 of a degree
• Seconds – 1 second = 1/60 of a minute
• Like in time: 60 seconds in a minute; 60 minutes in an hour (degree)
• The units are subdivided like scale on a graph
• Could go by 100’s, 10’s, 1’s, etc.
• Could be divided further into tenths, hundredths, and thousandths (like in decimals)
• Scale
• Scale is the relationship between distances on a map and distances on the earth’s surface
• Represented as a fraction (1/20) or a ratio (1:20)
• What does this mean?
• Scale and the Real World
• • Other than mapmakers, what professions use scale?
• Scale is constant for a given piece - Ex: a map has the same scale for the entire map or a blueprint has the same scale for the whole blueprint
• Scale and the Real World cont.
• Hot Wheels Clip