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The Water Cycle

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Emily Bebler

on 9 December 2013

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Transcript of The Water Cycle

How does Evaporation happen?
The Water Cycle: Go with the Flow!

Authored by Emily Bebler, Ahlina Archibald, Christina Torres, Rachael Pirc, Alex Behnke, and Meghan Seitz
Condensation is the process by which water vapor in the air is changed into liquid water.
What is condensation?
Why does condensation happen?
Condensation is crucial
to the water cycle because it is responsible for the formation
of clouds. These clouds may
produce precipitation, which is
the primary route for water to
return to the Earth's surface
within the water cycle.
How does precipitation happen?
Importance of precipitation
Without precipitation our earth would have no fresh water, which means we would have no new rivers, streams, lakes, oceans. Our trees and plants wouldn't be able to get their food and grow to where they need to be.
Is the process by which moisture is carried through plants from roots to small pores on the underside of leaves where it changes to vapor and is released to the atmosphere.
What is it?
Groundwater occurs when the water that doesn't become runoff seeps through the soil until it reaches rock material saturated with water.That material is commonly an aquifer. It exists in the pore spaces and fractures in rock material beneath the surface of the Earth.
What does it do?
The water molecules in the groundwater start to move at a slow place underground. The molecules do not change shape or form but they do change location as they first move downwards ,due to gravity, and then moves and rises to areas of lower pressure. Near the surface, when the water table intersects the surface, it is released into streams, lakes, and mostly the ocean.
Interesting Information
Groundwater makes up 1% of the total water on Earth (mostly in the ocean).Yet this is 35 times the water found in lakes and streams.
What is Runoff?
Runoff is the precipitation that falls to the ground and doesn't become groundwater. The water molecules in this stage are always liquid, meaning that its molecules slide across each other with more freedom than a solid but less than a gas. However, if the runoff forms from melted snow or ice, then it would have first started off with its molecules in a fixed position as seen in solids.
"Hydrological Cycle." Hydrological Cycle. N.p., n.d. Web. 05 Nov. 2013. <http://www.euwfd.com/html/hydrological_cycle.html>.
How does Runoff Affect the Land?
"The Water Cycle: Transpiration." , from USGS Water-Science School. N.p., n.d. Web. 05 Nov. 2013.
Although most runoff returns to larger bodies of water, some of it is absorbed into the ground. From here on out, it's known as groundwater.
If too much groundwater is absorbed, then the ground becomes saturated to the point where it can no longer absorb any more water.
What is the importance of Transpiration?
The importance of transpiration is it's the evaporation of water from a plant's leaves, stem, flowers, or roots back to the atmosphere.
Evaporation is the process by which water changes from a liquid to a gas, or vapor. It's the primary pathway that water moves from the liquid state back into the water cycle as atmosphere water vapor.
Molecule movement
"Transpiration." Transpiration. N.p., n.d. Web. 06 Nov. 2013.
"Transpiration - Water Movement through Plants." Plant and Soil Sciences ELibrary. N.p., n.d. Web. 07 Nov. 2013.
What is the movement of water molecules
The movement of water molecules in transpiration is through a plant and its evaporation from aerial parts, especially from leaves but also from stems and flowers. Leaf surfaces are dotted with pores which are called stomata.
"Transpiration - Google Search." Transpiration - Google Search. N.p., n.d. Web. 13 Nov. 2013.
"Transpiration." Transpiration. N.p., n.d. Web. 13 Nov. 2013.
Betts, Lynn. Runoff on farm in Iowa. Digital image. Runoff of Soil and Fertilizer.jpg. Wikipedia, 21 Mar. 2009. Web. 13 Nov. 2013. <http://commons.wikimedia.org/wiki/File:Runoff_of_soil_&_fertilizer.jpg>.
Pease, James M. Runoff flowing into a storm water drain. Digital image. Runoff.jpg. Wikipedia, 6 May 2006. Web. 13 Nov. 2013. <http://en.wikipedia.org/wiki/File:Runoff.jpg>.
Since no more is able to be absorbed, the water sits on top of the surface of the ground. The water builds up, adding to the unabsorbed runoff thus causing flooding.
What Role Does the Environment Play?
The ocean plays a large role, being the major place that runoff ends up after falling as precipitation. It is also the main point at which evaporation occurs, thus allowing clouds to form and drop the precipitation in the first place. The sun is the cause for this evaporation. The permeability of the land determines how much water will become runoff and how much will become groundwater.
When gas molecules transfer their energy to something cooler, they
slow down and their attractions cause
them to bond to
become a liquid.
Betts, Alan K. Oceans and clouds. Digital image. The Climate Energy Balance of the Earth. N.p., 2013. Web. 13 Nov. 2013. <http://alanbetts.com/understanding-climate-change/question/the-climate-energy-balance-of-the-earth/>.
Diagram of runoff process. Digital image. Runoff Processes. N.p., n.d. Web. 13 Nov. 2013. <http://stream2.cma.gov.cn/pub/comet/HydrologyFlooding/RunoffProcessesInternationalEdition/comet/hydro/basic_int/runoff/print.htm>.
Precipitation happens first by water droplets evaporating from the ground (groundwater) and into the air (clouds) and form into little tiny water droplets and when those clouds get full it either rains, snows, hails, or sleet. This is how we replenish out water supply for the trees and plants.
Why does Evaporation occur?

Evaporation occurs when particles of a liquid are heated up by a source of heat. It occurs on the surface of an exposed liquid, permitting molecules to escape and form water vapor.
What is the importance of Evaporation?
Evaporation is an important process in the global water cycle. Solar radiation hits the surface of water or land and causes water to change state from a liquid to a gas. This is how water vapor enters the atmosphere: moisture in the atmosphere is linked to cloud formation and rainfall. Evaporation acts like an air conditioner for the surface because heat is used when water enters the atmosphere as moisture. But at the same time, water vapor acts as a green house gas by trapping radiation in the lower atmosphere.
Groundwater is also a primary source of clean water for many companies because it has a sort of natural underground filtration system.
Saturated-soaked with moisture
Water Table-surface below saturated zone
Groundwater's role in the water cycle is replenishing the water so that the process can start over again so that we don't run out of water.
The groundwater flows from runoff and back into the ocean or another large water source. This is where it is then evaporated by the sun.
Precipitation is the action or process of precipitating a substance from a solution. (Example: rain, snow, sleet, or hail)
What is Precipitation?
• Clouds. Digital image. N.p., n.d. Web. 14 Nov. 2013. <http://ga.water.usgs.gov/edu/pictures/hdlands-fog.jpg>.
• Condensation on Water Bottle. Digital image. N.p., n.d. Web. 14 Nov. 2013. <• http://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Condensation_on_water_bottle.jpg/800px-Condensation_on_water_bottle.jpg>.
• Watercycle. Digital image. N.p., n.d. Web. 14 Nov. 2013. <http://www.teachengineering.org/collection/cub_/lessons/cub_images/cub_natdis_lesson07_fig1.jpg>.
• "The Water Cycle: Condensation." , from USGS Water-Science School. N.p., n.d. Web. 14 Nov. 2013. <http://ga.water.usgs.gov/edu/watercyclecondensation.html>.
• "Changing State: Condensation." Changing State—Condensation. N.p., n.d. Web. 14 Nov. 2013. <http://www.middleschoolchemistry.com/lessonplans/chapter2/lesson3>.

Molecule Movement
There are four types of precipitation: rain, snow, sleet, hail. Rain falls as a liquid. Snow would be a solid because it is little ice crystals forming around a speck of dirt/dust. Hail and sleet are solids because they are chunks of frozen ice that comes from the sky. Rain, snow, hail, and sleet are all evaporated by the suns heat, and then it remains in the atmosphere until it is ready to release, forming clouds and then forming rain, snow, sleet, hail.
Poon, Wing-Chi. Runoff. Digital image. Runoff from Excelsior Geyser to Firehole River at Midway Geyser Basin.jpg. Wikipedia, 13 June 2004. Web. 13 Nov. 2013. <http://commons.wikimedia.org/wiki/File:Runoff_from_Excelsior_Geyser_to_Firehole_River_at_Midway_Geyser_Basin.jpg>.
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