The Water Cycle

Water itself is the only substance that exists in liquid, gas and solid form - the keys to the water cycle. Here's how the cycle works:

 

Water CycleWater evaporates from oceans, rivers and lakes (water in its liquid form) and rises into the atmosphere (water in its gas form) where it condenses to form clouds. Precipitation then falls to the earth in the form of rain (water in its liquid) or snow (water in its solid form) where it flows into oceans, rivers and lakes and the process begins again.