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<br />. <br /> <br />. <br />.... . ... . <br />..... .. ..' <br />. .... .... . ...... <br />.''1'.' ..... ./. .'0":' <br />.VA <br /> <br />. . <br />.. I. ... <br />.:...... ... . . <br />. .1.' ..... . <br />..:-.':.: .. .... ..... <br />. .... .... I.... <br />~O'.,. ~,..,.:. '.~:""~'. <br /> <br />i-.' <br /> <br />'.:.. . ..... " .. <br />. ". .' ':" .......:..:.. ..".,. <br />. .' . '. ..., <br />..... .. ......,;... '. ..... '. <br />. ..' .... .. ,....... ..... <br />-., ., . '. ..... :. .... .... ......\ <br />AYi'.N"ij <br /> <br />{{({ {ff ff{{ (fff <br />~CDf7 <br />O~ <br />\ . ~ <br /> <br /> <br />. " <br /> <br />, <br />'.. ~.: <br /> <br /> <br />{{2(}C2~ <br /> <br /> <br />Warm a spot on a blackboard or slate <br />with a candle or sunl:ghl, Using a <br />sponge, place water spots of equal size <br />on this warm area and one a cool one. <br />How long did it take the warmed spot to <br />disappear? <br /> <br />The cool one? <br /> <br />Why? <br /> <br />'" <br /> <br />With a moist sponge or cloth, make <br />spots 01 equal size on a cool blackboard <br />some distance apart. Fan one spot and <br />let the other evaporate on its own, <br />Which one evaporated first? <br /> <br />Why? <br /> <br />Where have you seen the same thing <br />happen in nature? <br /> <br />area <br /> <br /> <br />TYPE <br /> <br />Pour one cup 01 water into <br />each of 3 one Ib coffee cans <br />filled with different types of <br />soil - clay, sand and a good <br />loam or potting soil. <br />Weigh each can daily for a <br />week, <br />What happened? <br /> <br />Why did one can get lighter <br />faster? <br />