Water Science School

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Snowcovered mountains in Canada, showing blowing and evaporating snow.
September 27, 2011

Sublimation occurs on snow covered mountains.

Sublimation occurs on snow-covered mountains

Here are some of the cold and snow-covered mountains of western Canada. What parts of the water cycle are at work at the top of these mountains, at a place where you certainly won't find any liquid water? Many mountains are snow covered all year, so if it never rises above freezing, how does snow not build up forever on

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The distribution of water on, in, and above the Earth
October 25, 2019

The distribution of water on, in, and above the Earth

The World's Water - Distribution of Earth's Water

The Earth is a watery place. But just how much water exists on, in, and above our planet? About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent

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Attribution: Water Resources
The Water Cycle (Natural water cycle)
October 16, 2019

The Water Cycle (PDF Diagram)

The Water Cycle

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 (Natural water cycle)
October 16, 2019

The Water Cycle (Natural water cycle)

The Natural Water Cycle

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

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 El Ciclo del Agua Para Niños, The Water Cycle for Schools, Spanish
October 15, 2019

El Ciclo del Agua Para Niños - The Water Cycle, Spanish (PDF)

El Ciclo del Agua Para Niños

El Servicio Geológico de los Estados Unidos (USGS por sus siglas en inglés) y la Organización de Alimento y Agricultura de las Naciones Unidas (FAO) han colaborado en la creación de un diagrama sobre el ciclo del agua para niños de las escuelas elementales e intermedias.

Quizás pienses que cada gota de lluvia que cae del cielo,

天然水循环, The Natural Water Cycle, Simplified Chinese
October 8, 2019

天然水循环, The Water Cycle, Chinese

什么是水循环?

什么是水循环?回答这个问题非常容易 ---水循环通常也被称为"水分循环"或"水文循环",是指水在地球上、地球中以及地球上空的存在及运动情况。地球的水处于不停地运动中,并且不停地变换着存在形式,从液体变成水蒸气再变成冰,然后再循环往复。水循环已经持续了几十亿年,地球上的所有生命都依赖于水循环。如果没有水循环,地球将会是一个毫无生气的地方。

O Ciclo d’água, The natural water cycle, Portuguese
February 21, 2017

O Ciclo d’água, The 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 funcionado por bilhões de anos e toda a vida na

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Vann Sykkel, The Natural Water Cycle, Norwegian
September 25, 2019

Vann Sykkel, The Natural Water Cycle, Norwegian

Vannets kretsløp, The Natural Water Cycle, Norwegian

Vannets kretsløp beskriver forekomsten og bevegelsen av vann oppå, inn i, og over jorden. Jordens vann er hele tiden i bevegelse og det forandrer stadig form fra å være flytende til damp, til is og så tilbake igjen. Vannets kretsløp har fungert i milliarder av år og alt livet på jorden er avhengig av det; uten

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El ciclo natural del agua, The natural water cycle, Spanish
September 19, 2019

El Ciclo del Agua - The Water Cycle, Spanish (PDF)

El Ciclo del Agua

Qué es el ciclo del agua? Fácilmente puedo contestar que...soy "yo"! El ciclo del agua describe la presencia y el movimiento del agua en la Tierra y sobre ella. El agua de la Tierra esta siempre en movimiento y constantemente cambiando de estado, desde líquido, a vapor, a hielo, y viceversa. El ciclo del agua ha estado ocurriendo por billones de

Bar chart showing the distribution of water on, in, and above the Earth.
December 31, 1993

The distribution of water on, in, and above the Earth.

Where is Earth's water?

For an estimated explanation of where Earth's water exists, look at this bar chart. You may know that the water cycle describes the movement of Earth's water, so realize that the chart and table below represent the presence of Earth's water at a single point in time. If you check back in a thousand or million years, no doubt these numbers

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Drippy - Water Science School
September 11, 2019

Water Webquest - Middle School Learning Tool for Water Education

"Water Webquest"!

A middle-school teaching tool to help students learn about water by investigating the USGS Water Science School website.
Courtesy of Tanya Gordon, Earth Science Teacher, West Jr. High, Boise, Idaho.

Flyer promoting the USGS Water Science School
August 8, 2019

Flyer promoting the USGS Water Science School

The new and revised "USGS Water Science School" site is ready for you to visit and learn all about water ... no matter what your age.

Access it at:

https://www.usgs.gov/water-science-school