1. Introduce the idea of building a model of the water cycle. Remind students that they have seen and used drawings and animations as models of a solid, liquid, and gas. Tell students that they will ...

up into the sky and back to Earth again The three steps of the water cycle: evaporation, condensation and precipitation The water cycle in different places around the world This resource is ...

Prolonged droughts, wildfires and water shortages. Torrential downpours that overwhelm dams and cause catastrophic flooding.