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This presentation reviews the complete water cycle, including some of the constructed water cycle. Used as an environmental overview for life science and environmental. Geared for Secondary students, but also could be used as an intro for up to College level classes.
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The Water Cycle !!
A Water Cycle !!
Not a Water Cycle!
Water Cycle Diagram – Instructions
Vapor = TransportationA. Transportation – moving H2OMovement of water from
one place to another
CondensationB. Evaporation & C. Condensation Liq => Gas Gas => Liq
Condensation – gaseous water or vapor changing into a liquid
Evaporation – liquid water changing into a gas or water vapor
D. Transpiration (Liq => Gas fm Tree leaves)
Water that moves through and evaporated from plants
PrecipitationE. Precipitation (falling H2O.)
Condensed water (rain, sleet, snow & hail) that falls to the ground
http://www.erh.noaa.gov/rnk/Newsletter/Fall%202005/thunderstorm.jpg
E. Precipitation (falling H2O.)
Condensed water (rain, sleet, snow & hail) that falls to the ground
http://veimages.gsfc.nasa.gov/355/PIA02727_md.jpg
F. Surface Run off - on Oahu (moving H2O)
Water from rain, snow or ice melt that flows over the land surface
http://www.geologywales.co.uk/coedybrenin/pyritised.jpg
G. Infiltration & H. Percolation H2O penetrate soil surface H2O penetrate soil layers
http://www.geologywales.co.uk/coedybrenin/pyritised.jpg
SUMMARY G. Infiltration & H. Percolation H2O penetrate soil surface H2O penetrate soil layers
I. Aquifer – H2O in sand & gravel layers
Storage of water underground. Underground water is called “groundwater”. This water is stored in the spaces between
sand & gravel.
Layers in soil show evidence of water
beneath the surface
J. Groundwater Flow (H2O flow underground)
Movement of groundwater
Man with a Dousing Rod In the early
1920’s“finding
water”Superstitious people
believed some had the “gift” to sense water
underground! Dowsers made a lot of
money for their ‘talents’.
Groundwater Quality issuesIf groundwater becomes contaminated, the polluted water flows
through the aquifer, spreading to other areas over time.
http://www.fws.gov/ChesapeakeBay/Newsletter/Summer05/Streams/Flowing%2520stream.gif
K. Return Flow – H2O flow on surface to lakes etc
Surface water flowing downhill to a larger water body
K. ‘Hidden’ Return flow from Human Use
Water flow / pumped to a larger water body after human use.
http://upload.wikimedia.org/wikipedia/en/9/90/Sunset_Marina.JPG
L. Accumulation – H2O liq. in large areas
http://global-warming.accuweather.com/e8f1dea87-thumb.jpg
L. Accumulation - H2O sol. in large areas
Gathering of large amounts of water over time in the form of liquid water, snow, or ice.
http://www.lrn.usace.army.mil/op/cen/rec/images/scenic_lake2.jpg
L. Accumulation - H2O liq. in large areas
Gathering of large amounts of water over time in the form of liquid water, snow, or
ice.
http://upload.wikimedia.org/wikipedia/commons/8/89/DryIceSublimation.JPG
M. Sublimation Solid=>Gas (Dry Ice)Changing from a solid to a gas. Example, ice cubes in a freezer get
smaller as they “sublime” over time.
N. Deposition Gas => Solid
Water physically changing directly from a
gas to a solid.
O. Melting Solid => Liquid
http://personalrefrigeration.com/images/PR%20images/melting_ice_cubes.jpg
Water physically changing from a solid to
a liquid.
http://en.wikipedia.org/wiki/File:ICERAIN2.JPG Attribution ShareAlike 2.5
P. Freezing - Liquid => SolidWater physically changing from a liquid into a solid.
Hydrological or “Water” Cycle
Infiltration &