What happens when there is no water for humans?
Never-ending process that provides a continuous supply of water. Continuous movement of water from the Earth to the sky and back to the Earth again.
The Water Cycle
What is the main source of energy in the water cycle?
Heat from the sun drives the water cycle
Water from the ground, rivers, lakes and seas gain heat from the sun and evaporates to form water vapour.
Which of the following is an important process in the water cycle?
Can you think of anything else that produces water vapour?
Animals and plants also give out water vapour
Sources of water vapour
Movement Water vapour then rises into the sky where the temperature decreases as it is cooler.
This water vapour then comes into contact with the cooler surroundings, loses heat and condenses, forming tiny water droplets
Movement These tiny water droplets gather together to form clouds
What is the state of matter for clouds?
As more water droplets gather to form clouds, they become heavier and fall as rain The rain flows back into rivers, lakes and seas. The water cycle then repeats itself