高二unit13reading课件
日期：2010-09-22 09:07
waterisaliquidatroomtemperature;waterhasalowfreezingpoint(density1，ArcticOceanThepropertiesofwaterPre-readingWhatare_____________________?Whatdo_____________________looklike?Whatarethedifferentpartsof_______?Whatcan_________becomparedto?Howdoes_________work?Whataresomeexamplesof______________?thepropertiesofwaterthepropertiesofwateroceanstheoceanslifeintheoceanstheoceansThekeysWaterispolar，openocean，andwateristhesourceoflifePartoneWhatisthechemicalstructureofwater?Whatdoesitlooklike?Whataredifferentpartsofchemicalstructure?Howdoesitwork?TwohydrogenatomsandoneoxygenatomPositiveend，estuaries5Notgiven6Notgiven/theoceansaremadeofwater，bottom，000kg/m3;highheatcapacity)3Notgiven4Surface，negativeendItcauseswatertobeabletodissolvebothsolidsandgasesParttwoSalinityWhatissalinity?Whataredifferentpartsofsalinity?Howdoessalinitywork?Whataresomeexamplesofsalinity?DissolvedgasesandsolidsmixedwithpurewaterDissolvedgasesandsolidsmixedwithpurewaterItaffect，
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