Latitude, Longitude, And Scale

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Latitude, Longitude, And Scale

  1. 1. Latitude, Longitude, and Scale
  2. 2. Latitude and Longitude <ul><li>Where do these Numbers Come From?? </li></ul>
  3. 3. Latitude and Longitude cont. <ul><li>Latitude and Longitude are basically a giant coordinate system. </li></ul><ul><li>Map of Michigan </li></ul><ul><li>Practice Questions </li></ul>
  4. 4. Degrees, Minutes, and Seconds <ul><li>Degree – degrees are marked on a map/globe by the solid lines </li></ul><ul><li>The distance between all lines of longitude is approximately 69 miles </li></ul><ul><li>The distance between lines of latitude are approximately 69 miles at the equator and 0 miles at the poles </li></ul>
  5. 5. Degrees, Minutes, and Seconds cont. <ul><li>Minutes – 1 minute = 1/60 of a degree </li></ul><ul><li>Seconds – 1 second = 1/60 of a minute </li></ul><ul><li>Like in time: 60 seconds in a minute; 60 minutes in an hour (degree) </li></ul><ul><li>The units are subdivided like scale on a graph </li></ul><ul><ul><li>Could go by 100’s, 10’s, 1’s, etc. </li></ul></ul><ul><li>Could be divided further into tenths, hundredths, and thousandths (like in decimals) </li></ul>
  6. 6. Scale <ul><li>Scale is the relationship between distances on a map and distances on the earth’s surface </li></ul><ul><li>Represented as a fraction (1/20) or a ratio (1:20) </li></ul><ul><li>What does this mean? </li></ul>
  7. 7. Scale and the Real World <ul><li>• Other than mapmakers, what professions use scale? </li></ul>• 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
  8. 8. Scale and the Real World cont. <ul><li>Hot Wheels Clip </li></ul><ul><li>Advertising Clip </li></ul><ul><li>What kind of math did the people in these videos use? </li></ul><ul><li>What did they have in common? </li></ul>
  9. 9. Large Scale vs. Small Scale <ul><li>Large Scale – small area is covered with a large amount of detail </li></ul><ul><ul><li>Ex: 1:10 </li></ul></ul><ul><ul><li>Detailed map of the ATA </li></ul></ul><ul><li>Small Scale – large area is covered with a small amount of detail </li></ul><ul><ul><li>Ex: 1: 1,000,000 </li></ul></ul><ul><ul><li>A Globe </li></ul></ul>

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