Quiz
El nino/la nina and a normal year
Questions in this quiz (4)
1In a normal year....
- ATrade winds blow towards the equator and the warmer water of the western pacific.
- BThe trade winds patterns are disrupted
- CHere the warmer water heats the air above causing convectional uplift, creatng low pressure weather conditions and rainfall over south east asia
- DIn the East Pacific off the coast of Peru, the conditions are dry as the air returns and sinks here, creating the walker loop.
- EThe trade winds either die or blow in the opposite direction
- FThe pressure of the trade winds results in sea levels in Australasia being 50cm higher than in peru and sea temps 8C higher
- GThe air movement also enables the winds to pull up water along the east coast of south america
- Hthe air circulation loop is reversed
- IOn the east coast of south america there is a shallow warm upper layer overlying the deep cold layer of the ocean the boundary between these layers is the thermocline
- JThe thermocline causes an upwelling of cold water bringing nutrients from the ocean bottom and producing optimum fishing conditions off the coast of peru
2Facts about el nino
- ATrade winds in the western pacific die or blow in the opposite direction
- Bit's like an exxagerated normal year
- Cthe water that is normally piled up in the west moves back to the east so that the sea level on the peruvian coast rises 30m and conditions are calmer across the whole pacific ocean.
- DThe air circulation loop is reversed so that air sinks in the western pacific bringing drought to countries in that region
- Eextremely strong trade winds
- FAir rises in the eastern pacific causing convectional rainfall- sometimes flooding in coastal areas in south america
- GThe change in location of air distorts the jet streams causing world wide teleconnections
3facts about la nina
- AAn exaggerated normal year with a very strong walker loop
- BThere are extremely strong trade winds pushing warmer water westwards and raising the sea level by up to a meter higher in indonesia and the phillipines
- Ccauses landslides in south america
- DDeep low pressure develops over south east asia causing heavy rain on account of the pacific there is a strong upwelling of cold water off the coast of peru
- EThe higher than average pressure that occurs heer causes severe drought in the semi-arid areas of peru and northern chile
- Fheavy rainfall in europe and flooding
- GThe see sawing of atmospheric pressure between the easterm pacific and the indo australian area is called the southern oscillation
4The effects of el nino on the west and east.
- ADrought in indonesia, australia and malaysia - west
- Bmany people die of extreme heat caused =east
- Cmild winters in n.usa and w.canada -west
- Ddemise of pevurian fish catches - east
- Ereduced hurricane season -west
- Fincreased rain in southern usa states
- GIncreased galapago iguana mortality rate -west
- Hlots of hurricanes in n america - west
- Iheavy rainfall in europe in the spring causing flooding-east
- Jhigh rain in s america leading to landslides in the andes - east
Information
- Description
- A levels Geography Quiz on El nino/la nina and a normal year , created by istarinmcvicar on 28/12/2013.
- Author
- istarinmcvicar
- Language
- English
- Views
- 156
- Tags
- Rating
- No ratings yet Rate this quiz