Humid Tropics Part 1

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Author:
dante01
ID:
217212
Filename:
Humid Tropics Part 1
Updated:
2013-05-02 05:53:12
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midterm
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  1. Who were the first people to define the tropics?
    • -The Greeks.
    • -They knew the earth was round and divided it into three zones
    • - frigid, temperate, and torrid
  2. What defines the Tropics?
    • 1. Tropic of Cancer
    • -23.5N
    • 2. Tropic of Capricorn
    • -23.5S
  3. Continental Island
    • -At one point it was connected to the mainland, but a sea level change led to isolation.
    • -Indonesia, New guinea, Trinidad
  4. Pangaea Islands
    • -broke off a continent
    • -Madagascar, New Zealand, New Caledonia
  5. Oceanic Islands
    • -Isolated out in the ocean.
    • -Two types: volcanic and coral.
    • -Hawaii, Easter Island, Tahiti, Bahamas
  6. Intertropical Convergence Zones
    drives all weather in the tropics. Fluctuates giving wet and dry seasons in the subtropics
  7. Low pressure
    Wet
  8. High pressure
    Dry
  9. Large Low pressures in West Indies called
    Hurricances
  10. Large Low pressures in China called
    Typhoon
  11. Large Low pressures in Australia called
    Willy Willy
  12. Large Low pressures in India
    Monsoon
  13. Salt water gradients
    • -SUB. TROPICAL: HIGH SALINITY
    • -TROPICS/NEAR EQUATOR: LOW SALINITY
    • -HIGH LATITUDES: LOW SALINITY
  14. Rainfall Gradient
    • -Tropics/Near Equator: Lots of Rain
    • -High Latitudes: Wet
    • -Low Latitudes: Dry
  15. Warm Currents
    • -Blue and clear
    • -few nutrients
    • -Ex. Gulf stream
  16. Cold Currents
    • -Green because of the algae.
    • -Ex. California, Peru
  17. Tides
    -Moon changes tides by 45 minutes each day. --Highest and lowest during new and full moons
  18. Types of Beaches
    • 1. Sediment by Rivers
    • 2. Biological Beaches
  19. Types of Sands
    • 1. Brown Sand
    • -sediment from rivers
    • -California
    • 2. Black Sand
    • -volcanic
    • -Hawaiin Islands
    • 3. White Sand
    • -biological:living things
    • -Australia
  20. Fringe reef
    -near shore, fringes the coastline
  21. Patch Reef
    -in a lagoon
  22. Barrier reef
    -offshore
  23. Origin of Coral Reefs
    • 1. Volcanic Island
    • 2. Fringing Reef
    • 3. Barrier Reef
    • 4. Atoll
    • 5. Seamount
  24. Where are coral reefs?
    • 1. 30 degrees North and South
    • 2. 64 to 91F 
    • 3. Clear water
    • 4. Shallow water
  25. Countries with the greatest length of coral reef
    • 1. philippines 22,450 km
    • 2. indonesia 17,500 km
    • 3. fiji 5,360km
    • 4. Fed St. Micronesian 3,915 km
    • 5. Vanuatu 3,792 km

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