#ngscience #watercycle #science #ngss
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ngscience explanatory video on the water cycle on Earth. Includes a detailed narration and clear animation of the process. Interactive content and printable resources relating to this video can be downloaded on ngscience.com.
Water on Earth is constantly being heated and cooled. As it does, it moves in a cycle between the surface of the Earth and the atmosphere. This process is called the water cycle.
The heat from sun causes the water in the ocean, lakes and rivers to change into a gas called water vapor. This process of changing from a liquid to a gas is called evaporation.
The water vapor in the air cools as it rises and changes to liquid water in the form of tiny water droplets in clouds. This process of changing from a gas to a liquid is called condensation.
The water droplets combine with other water droplets and eventually fall back to the surface of the Earth as precipitation. The precipitation flows on and under the ground into rivers, lakes and the ocean.
