Through the experiment conducted in Lesson 2: Evaporation Lab, students concluded that higher atmospheric temperature causes an increase in evaporation which results in more precipitation. In Lesson 3, students first calculate the carbon footprint of their morning commute to school to realize that different modes of transportation produce varying amounts of carbon dioxide Next, they conduct an experiment to explore how producing carbon dioxide impacts the ecosystem.
At the conclusion of Lesson 1: Water Cycle & Weather, students were asked the question: “How does temperature affect evaporation?” Students review the water cycle and how it affects the weather, conduct the evaporation lab and describe the factors that affect evaporation.
This lesson emphasizes how evaporation affects precipitation which contributes to heavy rain and storms. It lays the foundation for thinking about the ways that trees can mitigate increased weather effects in urban environments like Washington, D.C. First, students discuss their past observations of evaporation and write a hypothesis to describe this phenomenon. Next, students make entries to their lab journals based on classroom instruction of the water cycle using visuals and a NASA weather video. As a class, they label a diagram that models the stages of the water cycle.
The purpose of this activity guide is to help students understand their garden as a model watershed through the collection and analysis of rainwater filtration data. This guide serves as an extension to the Nature Works Everywhere How Natural Areas Filter Water lesson plan, which can be found at www.NatureWorksEverywhere.org.