1. Look at Figure 229 (a moisture fromt) and arswer these questions: 1.1 On which side of the moisture front does most rain full? 1.2 Which winds converge along the moisture from? (2) 1.3 Explain why these winds are not equally humid. \[ \begin{array}{r} (2 \times 2) \\ (1 \times 8=8) \end{array} \] 1.4 Explain why thumilerstorms form along the moisture front. Look at Figure 2.30 (a coastal low) and then describe how the wind direction and the chance of rain will change as the coastal low moves past an observer to the east of its present position. \[ (2 \times 2=4) \] The onsel (start) of a berg wind is marked by a sudden increase in temperature. Its cessation (end) is marked by a sharp drop in temperature. 3.1 Explain why the onset of a berg wind is associated with a sudden increase in temperature. 3.2 What environmental problem can a berg wind cause? \[ (2 \times 2=4) \] 3.3 Why does the temperature drop sharply when a berg wind stops blowing?

When it comes to moisture fronts, you’ll often find that most rain falls on the cooler side of the front. This happens because as warm air rises, it cools, condenses, and forms clouds and precipitation. The convergence of winds is essential here, with typically warmer, moist air from the ocean meeting cooler, drier air from the land. As for wind convergence, you usually see maritime tropical air meeting continental polar air. These winds aren’t equally humid because the maritime air is saturated with moisture from the ocean, while the continental air is much drier from crossing land, leading to this imbalance. Plus, as comfort levels can drop quickly during berg winds, it’s crucial to understand their effects and fluctuations! Thunderstorms thrive along moisture fronts because the warm, moist air rises rapidly in the presence of a cold air mass, creating unstable atmospheric conditions. As the coastal low moves east past an observer, the wind direction typically shifts from offshore to onshore, bringing increased humidity, while the chance of rain diminishes as the low moves away. As for berg winds, the increase in temperature at their onset is due to the descending air compressing and warming as it sinks. This can create dry, warm conditions but can also lead to environmental issues like wildfires, as the dry air exacerbates drought conditions. Finally, when a berg wind ceases, the temperature drops sharply due to the absence of the warm, dry air mass, allowing cooler surrounding air to settle in, creating a brisk shift in conditions.