Thursday, September 21, 2017

Climate structured answers 25/9




3
(a)



(i)
Identify the type of climate shown in Fig. 2.                                                            [1]

·       Monsoon climate (Not accept if there’s spelling mistakes)










(ii)
Describe the characteristics of the climate identified in 3(a)(i).                              [4]

·       High mean annual temperatures [0.5] of 27 degree Celsius. [0.5]
·       The annual temperature range is small [0.5]  at 11 degree Celsius. [0.5]
·       High amount of total annual precipitation [0.5] of 1600mm between June and September [0.5]  .
·       Distinct wet and dry season [1] with more precipitation in the middle of the year.


(b)
With reference to Fig. 3, explain the formation of the northwest monsoon and its impact on Australia from October to February.                                                                            [5]                                    

·       North hemisphere/India: High pressure [0.5], South hemisphere/Australia: Low pressure [0.5]
·       Due to the pressure difference, as wind blows from a high pressure to low pressure area [0.5], the Northeast wind [0.5] is formed.
·       As the wind crosses the equator [0.5], it changes direction/deflect left [0.5], which forms the Northwest wind [0.5].
Note : (Choose 2 out of the 3 points)
·       Moisture/ water vapour [0.5] is being picked up from the Indian Ocean [0.5]
·       Brings heavy rain to Australia [0.5] during the months of October to February [0.5].







2015 Class test






Explain why Singapore experiences the Northeast monsoon at the end of the year.




·       At the end of the year, the Northern hemisphere will be having winter and the air over interior Asia is cool.
·       The cool air contracts, becomes denser and sinks, creating an area of high pressure.
·       The Southern hemisphere is having summer. The warm air expands, becomes less dense and rises, creating an area of low pressure.
·       Winds blow out from high pressure to low pressure areas as Northeast monsoon winds to Singapore.











(c)

[4]






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