Week 11: Weather

 

  1. This week in lab, we explored weather. We began by taking a formative assessment and then drawing the water cycle as a group. We then did a jigsaw to learn more about cold fronts, warm fronts, stationary fronts, and occluded fronts. We ended lab by creating our AI spreadsheets to determine which sources give us the most accurate weather prediction. I have an image of the water cycle we created below and my notes from the jigsaw. 

Fronts

  • Cold Front: When large masses of cold air and warm air meet they don't mix; the cold air is denser and pushes underneath warmer, less dense air, forcing it upwards. This rapid uplift can lead to the development of towering clouds and severe weather 

  • Warm front: Warmer air rising up and over the colder air, leading to the formation of clouds and precipitation ahead of the front, followed by a rise in temperature and a shift in wind direction as the front passes

  • Stationary front: a boundary between two air masses that has stopped moving, where neither the warm air mass nor the cold air mass is strong enough to displace the other. This lack of movement often leads to persistent weather conditions, such as prolonged precipitation, extensive cloud cover, and the potential for severe weather to develop along the front. 

  • Occluded Front: When a warm air mass gets caught between two cold air masses. The warm air mass rises as the cool air masses push and meet in the middle. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward.

Water Cycle 

  1. How do pressure systems and air movement contribute to weather changes?

  2. This week during discussion we took a quiz. 

  3. In Chapter 11 I learned that weather is shaped by the movement of air masses and pressure systems. Warm fronts occur when warm air replaces cooler air, while cold fronts form when cooler air replaces warmer air. Low pressure systems cause air to rise, leading to clouds, wind, and precipitation, while high-pressure systems cause air to sink, creating clear, calm weather. Weather maps use symbols to show these patterns, including red lines with circles for warm fronts, blue lines with triangles for cold fronts, mixed lines for stationary fronts, and H and L symbols to represent high and low pressure areas. The saying “Red sky at night, sailor’s delight; red sky in morning, sailors take warning” can be explained scientifically because dust and particles in high-pressure systems scatter red light,helping people predict whether good or bad weather is approaching. I also learned about the water cycle, where water continuously moves between Earth’s surface and the atmosphere through processes like evaporation, condensation, precipitation, runoff, groundwater storage, and evapotranspiration. However, I am wondering how wind is caused when Earth’s surface is heated unevenly. But, overall, this chapter and the visuals used throughout were helpful to deepen my understanding. 

  4. I have no questions, comments, or concerns at this time. 

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