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The  North  Pole
 

The North Pole

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    The  North  Pole The North Pole Presentation Transcript

    • The North Pole
    • The Arctic
      • Survival IS possible
      • Nearly 4 million people (the population of Connecticut) and 8 different nations endure these extremes
      CROW-too-ah = I am Cold (Western Eskimo)
    • North Magnetic Pole VS. North Terrestrial Pole
      • North Magnetic Pole-
      • shifts 6-25 miles every year, 6.5-10 feet thick ice cap floating above the Atlantic Ocean, the magnetic field in which compasses point to
      • North Terrestrial Pole-
      • an axis on which the earth spins, point on the map, about 600 miles away from magnetic pole
    • What To Wear
      • Clothing
      • -several layers of loose light porous windproof clothing
      • (Do NOT wear waterproof)*
      • -WEAR WOOL & FURS!
      • - 40-45% body heat can be lost through exposure of the head, hands, feet, neck, wrists, ankles..
      • Keep covered at all times!!
      • *Clothes must prevent snow compacting, but be porous enough to allow water vapor to escape
      • Remember…
      • C - Keep clothing clean
      • O - Avoid overheating
      • L - Wear clothes loose and in layers
      • D - Keep clothing dry
    • Supplies
      • -Snow Goggles-protect eyes from snow blindness
      • (can be made of scrap material such as wood)
      • -Dog Sleds & Snow Shoes= way of transportation
      • -Food Availability = LOW
    • Arctic Temperatures
      • Winter temperatures in Feb
      • (-31 ◦ F)
      • Summer temperatures in July
      • (32 ◦ F)
      • Wind Chill*
    • * Sun is low and thin spread in high latitudes *Extreme arctic climates are due to spherical geometry
    • Human Adaptations
      • Temperature regulation
      • Shivering- blood vessels dilate and contract
      • Hypo metabolism saves energy
      • -secretion of thermogenic hormones such as thyroid and adrenal hormones- increase body heat
      • High blood pressure
      • -cold-induced increase in the peripheral resistance
    • S.A.D. Seasonal Affective Disorder
      • -Seasonal changes in levels of brain chemicals such as melatonin and serotonin in response to change of exposure to light and darkness
      • -Sad/ Depressed- Suicides increase
      • -Vitamin D
      • -* Can cause rickets, tetanus and osteomalacia
    • Hypothermia
      • Total body cooling, a bodily response which occurs when the right conditions are present such as wind exposure, wet conditions, where the body becomes very cold, coupled with total exhaustion
      • 94 ≥˚ F
    • Frost Bite
      • Body’s inability to compensate for cold exposure that produces injury
      • -Time of exposure, humidity, clothing WIND CHILL
      • Temperature drops, blood flow to surface decreases, blood vessels dilate, fluid shifts and crystal formation occurs