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HEMISPHERES, LATITUDE & LONGITUDE

HEMISPHERES, LATITUDE & LONGITUDE. HEMISPHERES. The world is shaped like a sphere (globe) It is divided into hemispheres (hemi = half, sphere = ball) Divided at the: Equator (northern and southern hemisphere) Prime Meridian (eastern and western hemisphere). HEMISPHERES.

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HEMISPHERES, LATITUDE & LONGITUDE

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  1. HEMISPHERES,LATITUDE&LONGITUDE

  2. HEMISPHERES • The world is shaped like a sphere (globe) • It is divided into hemispheres (hemi = half, sphere = ball) • Divided at the: • Equator (northern and southern hemisphere) • Prime Meridian (eastern and western hemisphere)

  3. HEMISPHERES • In which hemisphere do we live? • Northern and Western hemispheres • Hemispheres give us a good general idea of location in the world • To be more precise we use grids made up of latitude and longitude

  4. LATITUDE • also called “parallels” • lines drawn horizontally (east to west) on the surface of the earth • remember “lat is flat” • latitude lines begin at the Equator (0°) and are numbered towards the North and South Poles

  5. LATITUDE • lines are always equal distance from each other all the way around the globe • 1 degree of latitude to another is 111 km (i.e. 40°N to 41°N is 111 km) • How many km is the 49th parallel from the equator? • 49 x 111 km = 5439 km

  6. LATITUDE • Latitude lines are NOT each the same distance around the earth • lines become shorter as you move away from the equator

  7. LONGITUDE • also called “meridians” (see pg 19) • lines drawn vertically (north to south) on the surface of the earth • all longitude lines meet at the poles • they are NOT equal distance apart

  8. LONGITUDE • numbering begins at the Prime Meridian (0) which passes through Greenwich, England • rest of the lines are labeled according to their angle (east or west) from the Prime Meridian at the North Pole

  9. LATITUDE AND LONGITUDE • latitude and longitude lines ARE NOT the same as eastings and northings!!! • Read and write latitude and longitude lines as: • latitude first (N or S), then longitude (E or W) • i.e. 45N 123W

  10. LATITUDE AND LONGITUDE • to be more specific in pinpointing locations, each degree of latitude and longitude is further divided into 60 minutes • i.e. Kitchener, ON 4327N 8030W • this is the same idea as the difference between the 4 and 6 figure grid references

  11. ASSIGNMENT • Complete Geolab 15 • Picture Sources from: • http://www.cruising.sailingcourse.com/images/latitude.gif

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