The Water Cycle

The Water Cycle consists of….•Evaporation/transpiration•Condensation•Precipitation•Run-off

We reuse water everyday. It works as an endless cycle.

The Earth is very limited in Fresh Water. We have to use and reuse what we have.

Water can be found in 3 states.

• Liquid- water, streams, lakes

• Gas- evaporation, clouds, fog

• Solid- ice, glaciers

{• Why do puddles

disappear on hot days?

• What is happening?

• Water is turning from a liquid to a gas!

EVAPORATION

TranspirationSimilar to evaporation, only water is evaporated off of the leaves of plants after it is absorbed through the roots

{ {Oceans account for 80% of water that is evaporated.

What Happens Next?

The process of condensation occurs•When the temp of the air

is cold enough to change the water molecules from gas to a liquid•Water droplets form when small dust particles are present for the water to attach to

This process forms clouds!

The water eventually has to come down…

1)Water condenses onto tiny particles

2)Droplets collide and grow in size and weight

3)Enough collision occur to override the updraft speed

4)Droplets fall

Precipitation• Process of when water in the

atmosphere falls to the earth’s surface.

Types of Precipitation?SNOW

RAIN

HAILSLEET

Water that falls as rain and snow infiltrates into the subsurface of soil and rock. Some stays in the the soil, some may enter a stream, and some may infiltrate deeper and recharge ground aquifers.

How do we use ground water?•Pump water out of wells•Create dams to channel water into aquifers•We depend on stored water for daily use

Majority of water movement is contributed by the melting of snow caps

- Snow caps act as a natural reservoirs

We need fresh water to survive,

so use it efficiently!

Citations•Baaker2009, River-Braan-Hermitage, May 20, 2010, Attribution license•Corey Leopold, The Rain, July 3, 2009, Attribution license•Beth Trittipo, Puddle After Rainstorm, September 30, 2006, Attribution license•John M. Evans, The Water Cycle, USGS•Mikeyskatie, Glacier Run off Near Paradise on Mt. Rainer, August 21, 2010, Attribution license•Evaporation, The Watershed Concept, Michigan National Education Curriculum•Eric Heath, Fog 09/27/2007 Morning, September 27, 2007, Attribution license•Laffy4k, Rainy Street, May 26, 2009, Attribution license•Joe Robertson, The Biggest Hail I’ve Ever Seen, June 16, 2008, Attribution license•Juliancolton2, Snowflakes, January 12, 2011, Attribution license•Jurgen, Mountain Snow Caps, May 18, 2006, Attribution license•"The Water Cycle: Infiltration." USGS Science for a Changing World. N.p., n.d. Web. 8 Feb. 2011. <http://ga.water.usgs.gov/edu/watercycleinfiltration.html>.•Science Bus. Home page. The Science Bus Experiment. Black Ridge Media, 2007. Web. 28 Feb. 2011. <http://www.sciencebus.co.uk/topics/states.html>.•Missouri Botanical Garden. "The Water Cycle Introduction." MGBnet. The Evergreen Project, 2005. Web. 28 Feb. 2011. <http://www.mbgnet.net/fresh/index.htm>. •Grant Montgomery, Ocean View, August 14, 2010, Attribution license