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ACMP ©2006-2008 UAF Geophysical Institute A-1 Water, Water Everywhere
Water, Water Everywhere
Overview:Students explore the location of water on Earth using a terrarium to model the water cycle. (NOTE: This lesson requires two separate days.)
Objectives:The student will:• identifythevariouslocationsofwateronEarth;and• explainthatwaterexistsinvariousforms.
Materials:• Wide-mouthglassjar• Smallrocks• Sand• Soil• Smallplant• Plasticwrap• Globe• 1galloncontainer• Water• 2beakers• Smallmirror,orplasticbagandtape,see“CriticalThinkingQuestion”(oneperstudent)• OVERHEADS:“WateronEarth”and“SolidandLiquid”• STUDENTINFORMATIONSHEET:“ModelEarth”• STUDENTWORKSHEET:“Water,WaterEverywhere”
Activity Preparation: Build amodel terrarium, as outlined in theSTUDENT INFORMATION
SHEET:“ModelEarth”toshowtheclassasanexample.
Activity Procedure:
Day11. Displayaglobe.Askstudentswhataglobeisandwhatitshows.Ifneces-
sary,explainthattheglobeisamodelofEarth.PointtoAlaskaontheglobe,andexplainthatbluerepresentswater(oceans,lakes,etc.)andtheothercolorsrepresentland.
2. AskstudentshowmuchofEarth’ssurfaceiscoveredinwater.Explainthatmost(two-thirds)ofEarthis covered with water.
3. Tellstudentsthatstuff(matter)onEarthisfoundinbothsolidandliquidform.Showstudentsexam-plesofsolidsandliquidsintheclassroom.Makesurestudentsknowasolidissomethingthatkeepsitsshape,andaliquidissomethingthattakestheshapeofthecontaineritisin.Brainstormwordsthatdescribesolidsandliquids.
4. ShowOVERHEAD:“SolidandLiquid.”Pointoutthecupofwaterandtellstudentsthatitisaliquid.Pointouttheicecubeandtellstudentsthatitisasolid.Askstudentshowwaterturnsintoice.
5. TellstudentsmostofEarth’swaterisintheoceans.Showstudentsagalloncontainerfilledwithwater.Pour1/8cupsofwaterintoabeakerand1/3cupofwaterintoasecondbeaker.ExplainifthegalloncontainerrepresentedallthewateronEarth,thebeakerwith1/3cupshowsalltheice,andthebea-
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Level
Grades K-2
ACMP ©2006-2008 UAF Geophysical Institute A-2 Water, Water Everywhere
kerwith1/8cupshowsallthefreshwater.Thewaterleft inthegalloncontainerisallthewaterinEarth’soceans.
6. Askstudentsiftheycandrinkthewaterfromtheoceans.Explainthatthewaterintheoceanscon-tainssalt,andisnotdrinkablebypeople.Explainthatonly1%ofEarth’swaterisusablebypeople(theamountrepresentedbythe1/8cupofwaterinthebeaker).
7. Askstudentswhere liquidwatercanbe foundonEarth(lakes, rivers, oceans, etc.).AskstudentswheresolidwatercanbefoundonEarth(glaciers, sea ice, ice caps, etc.).Liststudentideasontheboard.Ifnecessary,explainthatliquidwaterisfoundinlakes,rivers,andoceans;andsolidwaterisfound in ice from glaciers, sea ice, and ice caps.
8. Displaythe“Earth’sWater”sectionof theGlobal Climate InteractiveDVD.Asaclass,explorethesectionsthatareappropriatetothelevelofknowledgeintheclass.
9. Inform students that they are going to build a terrarium as a model of Earth. Show students the class examplethatwascreatedduringtheActivityPreparation.DistributetheSTUDENTINFORMATIONSHEET:“ModelEarth”andaskstudentstodivideintopairs;anolderstudentwithayoungerstudentworkswell.
10. Explain that the jar is a model of Earth. Explain that all living things on Earth contain water. Water is alsointhesoil(dirt)andintheair.Waterisintheairintheformofclouds.Asrainfallsfromthecloudsorsnowonthegroundmelts,thesoiltakesinsomeofthewater,andplantsinthesoilusethewatertogrow.Animalseattheplantsandalsodrinkwaterfromriversandlakes.
11. Explainthatliquidwaterisnotinallthings.Someitems,suchasrocks,metal,andman-madeitems,suchasplastic,donotcontainliquidwater.
12. AskstudentstofollowtheinstructionsontheSTUDENTINFORMATIONSHEETtobuildtheirmodelEarth.Assistasnecessary.Makesurestudentterrariumsaredonecorrectlyandsetthemunderalamp or near a window.
Day213. DistributetheSTUDENTWORKSHEET:“Water,WaterEverywhere”andinstructstudentstocomplete
theworksheet,individuallyorinpairs,bycirclingthepicturesthatshowanitemthatcontainswater.(NOTE:Youmayalsoaskstudentstocolorjusttheitemsthatcontainwater,orcolorallitems.)
Critical Thinking Concept: Think-Pair-Share Method. As a class, list all the sources of water in the classroom.Remindstudentsthatwatercomesinsolidandliquidform.Remindstudentsthatwaterisintheairandinplantsandanimals.Todemonstrate,completeoneofthefollowingactivities:1)askstudentstoblowonamirror(thecondensationwilldemonstratehowthereiswaterinthebody),or2)direct students to place their hand in a plastic bag and secure it by wrapping tape around the wrist (themoisturethatformsinthebagisfromthestudent’sbody).
Extension Idea:Explaintotheclassthattheaveragepersonuses35gallonsofwaterperday.Askstudentshowtheyusewaterduringtheday,andliststudentresponsesontheboard.Distributeoneplasticbag(labeled“notused”)filledwith35sponges,andoneemptyplasticbag(labeled“used”)toeachstudent.Askstudentstokeeptrackoftheirwaterusebymovingaspongefromthe“notused”bagtothe“used”bageachtimetheyusewateruntilclassthenextday.After24hours,discusswithstudentshowtheyusedwater,howmuchwatertheyused,andhowtheycanconservewater.Makesurestudentsunderstandthatwaterisimportantforhumans(weneedtodrinkwater,brushourteeth,etc.).SincethereisonlysomuchonEarththatisdrinkable,itshouldn’tbewasted.
Answers: PictureswithanS:bike,apple,computer,book,andseaice. PictureswithanL:glassofmilk,river,lake,bottleofcookingoil
ACMP ©2006-2008 UAF Geophysical Institute A-3 Water, Water Everywhere
Model EarthStudent Information Sheet (page 1 of 2)
STEP 1. Place a layer of small rocks in the bottom of a glass jar.
STEP 6. Cover the lid of the jar with plastic wrap, poke a few small holes in the plastic wrap, and set in a sunny location.
STEP 2. Place a layer of sand over the rocks.
STEP 4. Make a small hole in the middle of the soil and place a small plant in the hole.
STEP 3. Fill the jar half full with soil. Wet the soil.
STEP 5. Water thoroughly.
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Level
ACMP ©2006-2008 UAF Geophysical Institute A-4 Water, Water Everywhere
plastic wrap
glass jar
soil
sand
small rocks
plant
Model EarthStudent Information Sheet (page 2 of 2)
ACMP ©2006-2008 UAF Geophysical Institute A-5 Water, Water Everywhere
Directions: Write an S under the pictures of a solid. Write an L un-der the pictures of a liquid.
S or L S or L S or L
S or L S or L S or L
S or L S or L S or L
Water Water EverywhereStudent Worksheet
Name:_______________________
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Level
Solid and LiquidOverhead
ACMP ©2006-2008 UAF Geophysical Institute Water, Water Everywhere
Water / Liquid
Ice / Solid
Water on EarthOverhead
ACMP ©2006-2008 UAF Geophysical Institute Water, Water Everywhere
Liquid Water Solid Water