The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Key Points Collecting the steam of boiling water on a plate with an ice cube over it is suitable to introduce the water cycle because here the students come to know that the small droplets of water on the plate are due to evaporation. Keeping utensils filled with water in sunlight for a couple of hours and then observing them is also suitable because here the students after some time see the decrease in the amount of decreased water and realize that the water has evaporated. Walking in the garden bare feet early in the morning and feeling dew is also suitable because here the students come to know that the dew they are feeling is the precipitated form of water to earth in the form of due Boiling water, cooling and putting it in a filter, drinking from the filter regularly, and then boiling water again to fill it is the least suitable because here the student can't observe a single process of the water cycle like evaporation, condensation, or precipitation. Hence boiling water, cooling and putting it in a filter, drinking from the filter regularly and then boiling water again to fill it is not suitable to introduce water cycle to the students.