Water cycle

Grade 07    Water Cycle The water cycle, also known as the hydrologic cycle, is the continuous movement of water from the earth's surface to the atmosphere and then back to the ground. It is a continuous process. Hence, it does not have a starting or and ending point. Thus, the water present on water has been in circulation since the evolution of the earth. Water goes through all the three states, solid-liquid-gas, in the process. There are several factors that assist the water cycle, the sun, air currents to name a few. Water changes its state through the variety of  processes from evaporation, melting and freezing, to sublimation, condensation, and deposition, All these changes require the application of energy. Stages of Water Cycle There are many processes involved in the movement of water apart from the major steps given in the above water cycle diagram. Listed below are different stages of the water cycle. Evaporation The sun is the ultimate source of energy, and it...