Name:___________________________________ Block:___________ Mapping Study Guide-Academic Latitude and Longitude 1. Latitude lines measure north and south but run east to west around the globe. The 0 latitude line is called the equator. 2. Longitude lines measure east and west but run north to south and intersect at the poles. The 0 longitude line is called the prime meridian. 3. Where in the world does the prime meridian cross? England, NOT the Pacific Ocean 4. Latitude and longitude lines are further divided into 60 minutes and those are then divided into 60 seconds. 5. What is the latitude and longitude of the following: (use map on page 708 – 709 in your textbook) a. Helena, Montana 46N, 113W b. Raleigh, North Carolina 36N, 79W c. Augusta, Maine 45N, 69W d. Tallahassee, Florida 31N, 85W Map Scales and Magnetic Declination 6. What type of scale is “1:24,000”? Representative Fraction or Ratio 7. What type of scale is “1cm=10km”? Verbal 8. What type of scale is “0____________10km”? Graphic or bar You see the following symbol on a map: MN 13W True North 9. Which direction is north? (up, down, left or right) Right 10. Will the compass arrow point to True North or Magnetic North? Magnetic north 11. Why does the magnetic declination change depending on your area? Depending on your location relative to true north and magnetic north, magnetic north may be west or east of true north and varies in degrees. See diagram in notes Time Zones 12. What is meant by “east increase, west less” in this diagram? Time is ahead going east and behind going west. 13. Why is Earth divided into time zones? The Earth rotates. Time zones prevent nearby communities from having different solar times, such as solar noon. 14. If it is 9pm at location D, what time is it at location C? 5pm 15. Where is the IDL on this map? Longitude line 180° in the pacific ocea Topographic Maps 16. What do contour lines show? Elevation above sea level Use the map to answer question 17-20 Z X 550 Y 17. What is the contour interval of this map? 50m 18. What is the elevation of point Y? 550m 19. What is the elevation of point X? 650m 20. What is the relief between points Y and X? 100m 21. How can you determine on a topographic map, if a hill is either steep or gentle? Closer contour lines indicate a steeper slope. 22. Where on Earth would you find an elevation of 0? Sea level, the beach 23. Create a topographic profile across line AB. A 600 700 1000 900 500 400 800 B 24. Draw contour lines across the river showing the direction of flow. Mapping Technology 25. What is GPS? Explain how it works and its uses. Global positioning system is a network of 24 satellites that orbit the globe. The person on the ground has a receiver and by triangulating (using 3 of those 24 satellites) their location, speed, and time can be determined. 26. Why is it necessary to create false color images? Landsat satellites detect light reflected off of Earth’s surface in a wavelength not in the visible spectrum. Computers analyze these wavelengths and produce an image that is not true-to-life color.