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

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.

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The Water Cycle for Adults and Advanced Students

The 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.

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Filter Total Items: 133
Date published: June 28, 2018
Status: Completed

Groundwater Flow and the Water Cycle

Yes, water below your feet is moving all the time, but, no, if you have heard there are rivers flowing below ground, that is not true. Water moves underground downward and sideways, in great quantities, due to gravity and pressure. Eventually it emerges back to the land surface, into rivers, and into the oceans to keep the water cycle going.

Note: This section of the Water Science...

Contacts: Ask USGS
Date published: June 18, 2018
Status: Completed

Groundwater Storage and the Water Cycle

The ground stores huge amounts of water and it exists to some degree no matter where on Earth you are. Lucky for people, in many places the water exists in quantities and at depths that wells can be drilled into the water-bearing aquifers and withdrawn to server the many needs people have.

Note: This section of the Water Science School discusses the Earth's "natural" water cycle...

Contacts: Ask USGS
Date published: June 12, 2018
Status: Completed

Evapotranspiration and the Water Cycle

Evapotranspiration can be defined as the sum of all forms of evaporation plus transpiration, but here at the Water Science School, we'll be defining it as the sum of evaporation from the land surface plus transpiration from plants.

Note: This section of the Water Science School discusses the Earth's "natural" water cycle without human interference.

Contacts: Ask USGS
Date published: June 12, 2018
Status: Completed

The Water Cycle, Arabic, هايملا ةرود

 The Water Cycle, Arabic,  هايملا ةرود

Contacts: Ask USGS
Date published: June 11, 2018
Status: Completed

Groundwater Flows Underground

Millions of cubic miles of water exists in the ground. You can't see it, but not only is it there, it is always moving around -- mostly downward, but also horizontally. Moving groundwater helps keep rivers full of water and allows for people to draw out water via wells. Moving groundwater is an important part of the water cycle.

Contacts: Ask USGS
Date published: June 8, 2018
Status: Completed

Freshwater (Lakes and Rivers) - The Water Cycle

Freshwater on the land surface is a vital part of the water cycle for everyday human life. On the landscape, freshwater is stored in rivers, lakes, reservoirs, and creeks and streams. Most of the water people use everyday comes from these sources of water on the land surface.

Contacts: Ask USGS
Date published: June 8, 2018
Status: Completed

Oceans and Seas and the Water Cycle

The oceans are, by far, the largest reservoir of water on earth — over 96% of all of Earth's water exists in the oceans. Not only do the oceans provide evaporated water to the water cycle, they also allow water to move all around the globe as ocean currents. Oceans are the storehouses of water nature uses to run the water cycle.

Note: This section of the Water Science School...

Contacts: Ask USGS
Date published: June 6, 2018
Status: Completed

Follow a Drip Through the Water Cycle

You may be familiar with how water is always cycling around, through, and above the Earth, continually changing from liquid water to water vapor to ice. One way to envision the water cycle is to follow a drop of water around as it moves on its way. Read on to learn more about the journey.

 

Contacts: Ask USGS
Date published: June 5, 2018
Status: Completed

Veeringe, The Water Cycle, Estonian

Veeringe, The Natural Water Cycle, Estonian

Mis on veeringe?

Mis on veeringe? Sellele on lihtne vastata - see olen mina, vesi, igal pool! Veeringe kirjeldab vee olemasolu ja liikumist Maa peal, sees ja kohal. Maakeral on vesi alati liikvel ning oma olekut muutmas - vedelast auruks ja jääks ning uuesti vedelaks. Veeringe on toiminud miljardeid aastaid ning sellest oleneb kogu elu...

Contacts: Ask USGS
Date published: May 2, 2018
Status: Completed

Su Döngüsü, The water cycle for schools, Turkish

Gökyüzünden yağan her yağmur damlasının, ya da içtiğiniz her bardak suyun hiç kullanılmamış olduğunu üşünebilirsiniz, ancak o her zaman buradaydı ve Su Döngüsünün bir parçasıydı.

Contacts: Ask USGS
Date published: May 2, 2018
Status: Completed

Кругообіг води, The water cycle for schools, Ukrainian

Може, ви думаєте, що кожна крапля дощу, яка падає з неба, чи вода, яку ми п'ємо із склянки, постійно є новими, але вони завжди були тут, як частинки із кругообігу води.

Contacts: Ask USGS
Date published: May 2, 2018
Status: Completed

Гардиши об, The water cycle for schools, Tajik

Шумо метавонед фикр кунед, ки ҳар як қатраи борони аз осмон афтида, ё ҳар пиёлаи обе, ки шумо менӯшед мутлақо нав аст, аммо вай доимо ҳамин ҷо буд ва қисми гардиши об дар табиат аст.

Contacts: Ask USGS