Water Science School
Water Cycle Components
Earth's water is always in motion, and the natural water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Water is always changing states between liquid, vapor, and ice, with these processes happening in the blink of an eye and over millions of years.
The Water Cycle for Schools and Kids
Use our Water Cycle for Schools area to introduce water-cycle science to elementary and middle-school students.
ExploreThe Water Cycle for Adults and Advanced Students
We offer extensive analyses about all of the parts of the water cycle; this area is recommended for high-school students to adult ages.
Explore
The Water Cycle
The U.S. Geological Survey (USGS) offers you the most comprehensive information about the natural water cycle anywhere. We've developed Web pages aimed at both younger students and kids and at ...
The Sun and the Water Cycle
Who's the boss? The real boss of the water cycle doesn't even live here on Earth. The sun is what makes the water cycle work. The sun provides what almost everything on Earth needs to go—energy, or heat.
El Ciclo del Agua, The Water Cycle, Spanish
El Ciclo del Agua, The Water Cycle, Spanish
Este diagrama muestra solo el ciclo natural del agua, ignorando las influencias humanas.
水循环, The Water Cycle, Chinese
水循环
该图仅显示自然水循环
O Ciclo d’água, The water cycle, Portuguese
O Ciclo d’água, The natural water cycle, Portuguese
O ciclo da água, também comumente conhecido como ciclo hidrológico, descreve a existência e o movimento contínuo da água sobre, dentro e acima da Terra. A água da Terra está sempre em movimento e sempre mudando de estado, de liquido para vapor, depois para gelo e novamente de volta para seu estado inicial. O ciclo da água tem...
Dystrybucja wody na Ziemi, Earth's Water Distribution, Polish
Dystrybucja wody na Ziemi
The Water Cycle for Adults and Advanced Students - In Many Languages
From Afrikaans to Zulu, the Water Science School has the world covered. Volunteers from around the globe have provided us with a water cycle diagram and summary text in over 60 languages. The diagrams below are intended for adults and advanced students.
This information is about the natural water cycle, ignoring human influences.
The Water Cycle for Schools and Kids
Earth's water is always in movement, and the natural water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Water is always changing states between liquid, vapor, and ice, with these processes happening in the blink of an eye and over millions of years.
Note: This section of the Water Science School...
Precipitation and the Water Cycle
The air is full of water, even if you can't see it. Higher in the sky where it is colder than at the land surface, invisible water vapor condenses into tiny liquid water droplets—clouds. When the cloud droplets combine to form heavier cloud drops which can no longer "float" in the surrounding air, it can start to rain, snow, and hail... all forms of precipitation, the superhighway moving water...
Le cycle de l’eau - The water cycle, French
Vous pouvez penser que chaque goutte de pluie qui tombe du ciel, ou chaque verre d'eau que vous buvez, est tout nouveau, mais, en fait, il a toujours été là et fait partie du cycle naturel de l'eau.
Il ciclo dell'acqua, The Water Cycle, Italian
Il ciclo naturale dell'acqua, The Natural Water Cycle, Italian
Questo diagramma mostra solo il ciclo naturale dell'acqua, ignorando le influenze umane.
Der Wasserkreislauf, The Water Cycle, German
Der Wasserkreislauf, The Natural Water Cycle, German
Du denkst vielleicht, jeder Regentropfen, der vom Himmel fällt, oder jedes Glas Wasser, das du trinkst, ist nagelneu, aber das Wasser ist schon immer da, und es ist Teil des Wasserkreislaufs.
The Water Science School -- What We Offer
The U.S. Geological Survey's Water Science School
Where anyone of any age can learn all about water.