The heat gained causes water on Earth's surface to become______.

The water will _________ into the air as water vapour.

Accumulated water vapour will form _______.

The clouds will become _______ when more water vapour combined.

In a period of time, the clouds will ________ to become rain.

_____ will flow back into lakes, river and seas on the Earth's surface.

This process repeats thus forming the ________.

Water cycle is the _______ from the Earth's surface to the air and to the surface again.

In summary, the natural water cycle involves the processes of _______ and ________.