O ciclo da água num saco de plástico com fecho

Demonstration experiment about water evaporation. Fill a Ziploc bag with a few centimeters of water and food coloring. Tape the bag against the window and leave it in the sun for a few hours. The water will move to the side of the bag (clouds) and fall if you touch it (rain). You can find the activity on page 8 of the Educator's Guide.