(a) Study Fig. 5, which shows data about the weather recorded on one day at a meteorological station. Air Pressure (mb): 1002 Maximum temperature (°C): 16 Minimum temperature (°C): 7 Wet bulb temperature (°C): 6 Dry bulb temperature (°C): 8 Relative Humidity (%): 75 Wind direction: SW Cloud type: Alto stratus Cloud amount (oktas): 2 Precipitation (mm): 1 [Figure 5]

Mark scheme

Marking points from the official mark scheme (May/June 2013). The mark or mark type is shown in brackets.

1. [1] (a)(i) 9C
2. [2] (a)(ii) A: maximum/minimum/wet bulb/dry bulb temperature; precipitation/air pressure/relative humidity/wind direction B: cloud type/cover or amount/wind direction
3. [3] (a)(iii) Ideas such as: use a wet and dry bulb thermometer or hygrometer; use relative humidity table/chart; work out depression of wet bulb (2)/subtract wet bulb from dry bulb (8–6); read off figure at intersection of dry bulb and wet bulb depression figures (where 8 and 2 intersect) etc. Accept: digital (1); hygrometer (1); read off figure displayed (1)
4. [4] (a)(iv) Ideas such as: reflect sun's rays/so they are not heated by the sun/thermometers in shade; so that air flows gently around them/they are not affected by the wind/air circulates within the screen; so they measure condition of air not ground; so they are not sheltered or shaded by trees/buildings; so they are not affected by concrete; to avoid tampering/damage; protects instruments from rain; etc.
5. [3] (b)(i) Ideas such as: high temperatures/25–26 °C/hot; constant temperatures/low or small temperature range; wet/high annual rainfall/1700 to 1900mm; rainfall all year; rainfall fluctuates; If refer to months for rainfall must refer to at least 2 months e.g. lowest and highest; etc.
6. [5] (b)(ii) Ideas such as: high temperatures due to position on Equator; which results in high angle of sun's rays/closer to sun/heat is concentrated in a small area (dev); small annual range of temperature due to constant overhead sun; wet climate due to convectional rainfall; large amounts of evaporation; and transpiration from abundant vegetation (dev); ascending air results in convection/cooling/condensation; low pressure; etc.
7. [7] (c) Level 3 (7 marks) Uses named example. Comprehensive and accurate statements explaining why deforestation is taking place including some place specific reference. Answers are likely to refer to factors such as: lumbering; mining; road building; settlements; farming.