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The Water Cycle

The Water Cycle
[in Spanish] © Contributed by Leanne Guenther Run and get a glass of water and put it on the table next to you. Take a good long look at the water. The water in your glass may have fallen from the sky as rain just last week, but the water itself has been around pretty much as long as the earth has! When the first fish crawled out of the ocean onto the land, your glass of water was part of that ocean. And you thought your parents were OLD The earth has a limited amount of water. This cycle is made up of a few main parts: evaporation (and transpiration) condensation precipitation collection Evaporation: Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam. Do plants sweat? Well, sort of.... Condensation: Water vapor in the air gets cold and changes back into liquid, forming clouds. You can see the same sort of thing at home... Precipitation: Precipitation occurs when so much water has condensed that the air cannot hold it anymore. Collection:

QCA document Visit the Canterbury Environmental Education Centre ( details ) and undertake one of the relevant programmes, 'Water Cycle at Broad Oak Lakes' 'Weather Days' or the 'Great Stour River Study.' The Great Stour River Study programme involves walking along a section of the river refering to maps, noting relevant geographical, man made and biological features and undertaking simple experiments (for example measure differing speed of channel flow). Visit the Virtual Tour pages to take this walk along the Great Stour, which can be used to prime or reinforce the field work. The Photo and Map pages are a good source of secondary information. The photographs focus on the Great Stour River along its course and the maps show the catchment area, topography and geology of the Gt Stour River basin. Use the Gt Stour Case Study pages as a secondary source of information on pollution, farming, industry and development and the potential impacts upon the Great Stour.

The water cycle, U.S. Geological Survey (USGS) Water Science School 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. Global water distribution For an estimated explanation of where Earth's water exists, look at the chart below. Notice how of the world's total water supply of about 332.5 million cubic miles of water, over 96 percent is saline. Source: Igor Shiklomanov's chapter "World fresh water resources" in Peter H. Where is Earth's water? For a detailed explanation of where Earth's water is, look at the data table below.

Condensation - The Water Cycle, from USGS Water-Science School Clouds over Kiger Notch, Steen's Mountain, OregonCredit: Bureau of Land Management View full size Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds. You don't have to look at something as far away as a cloud to notice condensation, though. The phase change that accompanies water as it moves between its vapor, liquid, and solid form is exhibited in the arrangement of water molecules. The little cloud that could—but why? Condensation in the air Even though clouds are absent in a crystal clear blue sky, water is still present in the form of water vapor and droplets which are too small to be seen. You might ask ... why is it colder higher up? Cumulonimbus cloud over Africa, taken from the International Space Station. View full size The clouds formed by condensation are an intricate and critical component of Earth's environment. Condensation near the ground

The Water Cycle Home The Earth is the water planet. Between two-thirds and three-fourths of its surface is water. Oceans supply the most water, but it also can be found in ponds, rivers, in clouds, and in lakes. The Earth is full of water. The water cycle is made up of four main parts: Evaporation and Transpiration, Condensation, Precipitation, and Accumulation. Evaporation is when the heat from the sun warms up water and turns it into water vapor. Water even evaporates from plants. You have already learned that condensation turns water vapor back to a liquid that forms clouds. Precipitation is also part of the hydrologic cycle. Accumulation of the precipitation is the final stage of the water cycle before it starts all over again.

The condensation stage of the water cycle Condensation Here is a scenario of how condensation works: Put a pot of water on the stove and bring it to a boil. Take a dry lid and cover it for a minute, and lift the lid up. What happens? Water droplets run down the lid and falls back into the pot. That is simply what happens during condensation. Condensation the process by which water vapor (gas) in the atmosphere turns into water (liquid state). As water vapor rises into the atmosphere, they mix up with very tiny particles of dust, soot and salt, which are all particulate matter in the atmosphere. Soon, there is so much moisture in the atmosphere, far more than the air in that region can take.

Earth Floor: Cycles The Water Cycle Water on Earth is always changing. Its repeating changes make a cycle. As water goes through its cycle, it can be a solid (ice), a liquid (water), or a gas (water vapor). Ice can change to become water or water vapor. How do these changes happen? If heat is taken away from water vapor, it condenses. The water cycle is called the hydrologic cycle. The cycle continues. Back The Water Cycle | Climate Education Modules for K-12 The water on Earth now is the same water that’s been on Earth since the beginning. The rain that falls on us is the same water that rained on the dinosaurs, King Tut, and George Washington. What makes that awesome feat possible? The first step of the water cycle is evaporation. The second step of the water cycle is condensation. The third and final step of the water cycle is precipitation. Aside from the above steps of the water cycle, there are also ways that water can be stored on Earth that play a role in the water cycle at various times throughout the year. As precipitation falls towards the earth, some of the water seeps into the ground, a process known as infiltration. The factors that impact infiltration also impact surface runoff.

Revolution: The Lifecycle of Water Told in a Stop Motion Pop-Up Book This blog has seen it’s fair share of pop-up books, and animation using paper, but this might be the first where everything comes together in a single piece. Revolution is an animated short by photographer Chris Turner, paper engineer Helen Friel and animator Jess Deacon that explores the life cycle of a single drop of water through the pages of an elaborate pop-up book. The book contains nine scenes that were animated using 1,000 photographic stills shot over the course of a year.

The water cycle: evaporation and condensation - That's Chemistry!- Learn Chemistry These PDFs have been taken from the popular book, That's Chemistry! compiled by Jan Rees. This book covers key ideas of physical science that primary students learn about, as well as giving numerous suggestions of activities, demonstrations and investigations that can be used to enhance students' learning. If you teach primary science, click the headings below to find out how to use this resource: Skill development Children will develop their working scientifically skills by: Asking their own questions about scientific phenomena. Learning outcomes Children will: Demonstrate that dissolving, mixing and changes of state are reversible changes. Concepts supported Children will learn: What happens during the water cycle and why. Suggested activity use This resource provides a long-term planning tool you can use to map out activities designed to teach children about the water cycle. Practical considerations You will need to look carefully and choose the activities that best fit your teaching sequence.

condensation Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water. Dew Point Dew point is the temperature at which condensation happens. Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When a pocket of air becomes full of water vapor, clouds form. Saturation Clouds are simply masses of water droplets in the atmosphere. Cold air holds less water vapor than warm air.

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