Create a mini water cycle using a plastic bag and observe evaporation, condensation, and precipitation over a week.
If a sealed bag with water is placed in sunlight, then the water cycle processes will be visible within the bag.
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Fill the plastic bag with a small amount of water.
Add a few drops of blue food coloring.
Seal the bag tightly.
Tape the bag to a sunny window.
Observe the bag daily for a week.
Note changes in water level and condensation.
Record temperature and sunlight conditions.
Discuss the stages of the water cycle observed.
Water will evaporate and condense, forming droplets at the top of the bag, mimicking the natural water cycle.
Amount of sunlight
Rate of water cycle processes
Amount of water, Bag size, Food coloring
Ensure the bag is sealed to prevent spills.
Show daily photos of the bag changes.
Explain each stage of the water cycle clearly.
Relate the experiment to natural weather cycles.
It helps visualize the movement and changes of water.
Try using a lamp as a heat source to simulate sunlight.
Changes can be seen daily, but a full cycle takes about a week.
