Fill in blanks The water cycle describes how water moves through the earth's crust , atmosphere and oceans. Heat from the Sun causes liquid water to evaporate from rivers, lakes and oceans and it becomes a gas called water vapour.. As the gas rises, it condenses and _to create droplets.

Water returns to the ground as solid hail and snow or liquid rain and sinks into the earth. Below the ground it forms_where water is held between grains in rock layers,_and _. Where aquifers intersect or cut the surface of the ground the liquid water flows out to form _, _ and _. Differences in elements, such as oxygen, can be used to estimate the _ and _ of water. A process is an event or series of events that cause a change to occur.