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Orient Yourself. Youth Leadership Forum 2011 Marking & Navigating “Earth, Sea & Sky”. History. ?. How did cavemen find their way home? North Star? Rising Sun (East) Setting Sun (West) Shadows? Breadcrumbs on Trail?. History . How did Christopher Columbus find his way? Around 1492
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Orient Yourself Youth Leadership Forum 2011 Marking & Navigating “Earth, Sea & Sky”
History ? • How did cavemen find their way home? • North Star? • Rising Sun (East) • Setting Sun (West) • Shadows? • Breadcrumbs on Trail?
History • How did Christopher Columbus find his way? • Around 1492 • Ocean and Wind Currents • Sextant viewing Horizon • Degrees, minutes, and seconds Modern day sextant.
History • 1980s - First GPS Satellites launched
Marking the Earth • North & South Poles • Latitude lines • Longitude lines
Poles North South
Latitude • Horizontal “Ladder” steps from Equator 0-90º North & 0-90º South
Longitude • Vertical lines from the Prime Meridian • 0-180º East & 0-180º West
Balloon Activity Blow up your balloon (not too big) Find a partner Stand back to back (Instructor places dot) Describe to your partner where dot is on your balloon. Partner asks questions and marks theirs. What is difficult about communicating this?
Balloon Activity • Mark North Pole as “N-90º” • Mark South Pole as “S-90º” • Draw Equator line, Mark as “0º” Latitude • Mark Northern Hemisphere “NH” • Draw 2 Latitude lines marking ‘N30º’ & ‘N60º’ • Draw a large “X” on the North Pole (Perpendicular Lines!) • Divide Equator circle into 4 equal parts. • (4 Longitudinal lines: ‘0º’, ‘E90º’, ‘W90º’, ‘180º’, ) • “0º” is the Prime Meridian or Greenwich Meridian • “180º is International Dateline
Balloon Activity 90ºN 60ºN 30ºN 90ºE 0º 90ºW 90ºS
Flat Map with Lat./ Long. 60ºN 30ºN 0º 30ºS 60ºS 179ºW 90ºW 90ºE 0º Prime Meridian 179ºE
Army Pacific Coordinates Korea: LatitudeLongitude -Red Cloud 37° 33’N 127° 00’E -Humphreys 36° 58’N 127° 02’E -Yongsan 37° 31’N 126° 58’E -Daegu 35° 49’N 128° 35’E Pacific: -Richardson 61° 15’N 149° 41’W -Wainwright 64° 82’N 147° 68’W -Greely 64° 54’N 157° 51’W -Zama 35° 30’N 139° 23’E -Torii Station 26° 08 N 127° 30’ E -Kwajalein 08° 43’N 167° 43’E Hawaii: -Hilo- 19° 43’N 155° 5’W -Honolulu 21° 20’N 157° 55’W -Kaneohe Bay MCAS 21° 27’N 157° 46’W -Wahiawa 21° 3’N 158° 2’W