Activity 6: Concept Map.
Directions: Complete the concept map by supplying the information you learn from the
paragraph below.
What happens during El Nino? During El Niño, air pressure rises in the western Pacific
and falls in the central and eastern Pacific. Without the strong pressure gradient, the
trade winds weaken. Without the trade winds, there is less upwelling near the coast of
South America and the warm and nutrient-poor water of the western Pacific spreads
east, piling up water in the eastern tropical Pacific. Not as much marine life can survive
in the warm water as can in the cool nutrient-rich waters. The warm water in the Pacific
evaporates faster than cool water, leading to more water vapor in the air which can
cause high humidity.
Concept map focusing on how El Nino events impact (1) weather (2) wind (3)
evaporation (4) Ocean temperature. (5) upwelling and (6) air pressure.
- it rises in the Westem Pacific
and drops in the eastern pacific
The
winds weaken
There is less upwelling near
South America
spreads east
Ocean temperature
across the pacific
There is more evaporation
- some places get cold and dry,
other places get warm and wet.
