Waec Model Questions Vol1 2023 Geography Question 4

A weather station recorded the following observations at 06:00 GMT on three consecutive days: | Day | Temperature (°C) | Relative Humidity (%) | Atmospheric Pressure (hPa) | Wind Speed (km/h) | |-----|------------------|-----------------------|----------------------------|-------------------| | 1 | 28 | 70 | 1008 | 12 | | 2 | 31 | 65 | 1005 | 18 | | 3 | 29 | 80 | 1002 | 22 | Two nearby stations, A and B, are situated 150 km apart along an east‑west line. Station A recorded a pressure of 1008 hPa on Day 1, while Station B recorded 1002 hPa on the same day. Using the data above, answer the following: (a) Calculate the mean temperature and mean relative humidity for the three‑day period. (b) Determine the pressure gradient between stations A and B on Day 1 and infer the approximate direction of the wind caused by this gradient (assume geostrophic balance and that wind blows parallel to isobars with lower pressure to the left in the Southern Hemisphere). (c) Using the temperature data, compute the temperature change rate (°C per day) between each consecutive day and identify the day with the greatest increase. (d) Based on the combined information (temperature trend, humidity, pressure change, and wind speed), describe the type of weather front that most likely passed over the area during the three days and justify your answer. (e) Suggest two precautionary measures that local farmers should adopt in response to the identified weather conditions.