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Refer to the valley between spot height 1709 in block H9 and trigonometrical station 241 in block G10 on the topographical map - NSC Geography - Question 3 - 2016 - Paper 2
Question 3
Refer to the valley between spot height 1709 in block H9 and trigonometrical station 241 in block G10 on the topographical map. 3.1.1 Why did the farmer select site... show full transcript
Worked Solution & Example Answer:Refer to the valley between spot height 1709 in block H9 and trigonometrical station 241 in block G10 on the topographical map - NSC Geography - Question 3 - 2016 - Paper 2
Step 1
Why did the farmer select site V to grow his/her crops?
Answer
The farmer likely chose site V due to several favorable conditions. Firstly, it has a flat land or gentle slope which is conducive for farming. Additionally, it is situated near a river or water source, providing necessary irrigation for crops. The soil in this area is fertile, enhancing the growth of various crops. Finally, its accessibility through existing infrastructure, such as roads, facilitates transportation and market access.
Step 2
Crops are stored in local silos. Is this a primary, secondary or tertiary activity?
Answer
This activity is classified as a tertiary activity. Tertiary activities involve the service sector, which includes storage, distribution, and services offered to support primary production (such as farming).
Step 3
The suitability of site V for cultivation may be reduced by flooding. Explain this statement.
Answer
Flooding can significantly impact the suitability of site V for cultivation. If the area is prone to flooding, the river may overflow its banks, leading to water inundating the farmland. This can wash away crops, erode the soil, and deposit silt that disrupts the cultivation process. Furthermore, low-lying areas are more susceptible to standing water, which can hinder plant growth and root health due to oversaturation.
Step 4
The farmer at V noticed that early morning mist in winter starts to clear from the bottom of the valley, as indicated in the sketches below. Explain why this happens.
Answer
The phenomenon observed occurs due to the temperature differences between the valley and its surroundings. At 07:00, mist covers the valley as the cold air settles, causing moisture to condense. As the sun rises, from 09:00 onwards, the temperature increases, causing the ground and the air to warm. This leads to the mist evaporating gradually, resulting in the valley becoming clearer. The moist air rising combined with terrestrial radiation further promotes evaporation, explaining the disappearance of mist.