Hi! I'm Aqua Shui, and I'm an expert on the water cycle (cause I've been through it myself)! If you look at the ocean here, you can see the liquid water being heated by the Sun! When the water is hot enough, it's turning into a gas called water vapor or steam! After that, it'll going to rise into the atmosphere!
Water can evaporate from just about anywhere watery: Oceans, lakes, ponds, rivers, streams; even off of plant leaves (in a special type of evaporation called transpiration). However, most water vapor comes from the ocean (since it covers about 71% of earth)!
Once all that water vapor gets into the air, it starts to cool down in the atmosphere's colder temperature. The gas starts to become liquid water droplets, forming the clouds! This stage is called condensation. The wind can then blow the clouds all over the world!
The cloud will get bigger and bigger, and the tiny water droplets inside will combine into bigger droplets! Eventually the droplets will get too heavy for the cloud to hold, and will fall toward the ground as different types of precipitation: rain, snow, hail, or sleet! The air temperature decides what precipitation falls. Watching precipitation fall is just so relaxing.
All that water that falls on the ground will eventually find its way back to a body of water! During this stage, the water will flow downhill according to gravity. This is called runoff! Sometimes runoff will sink into the ground, and become groundwater. Groundwater will also move according to gravity and will find its way back "home"! Did you know that plants absorb groundwater through their roots?
Evaporation
This is the water cycle! Evaporation, condensation, and precipitation. Then, the runoff goes back into a body of water and the cycle starts again!