Wednesday, April 29, 2009
Tuesday, April 28, 2009
Ｏｂｓｅｒｖａｔｉｏｎ ｏｆ ｌｅａｆ ａｂｓｏｒｂｉｎｇ CO2
Ｓｈａｌｉｎｉ:Ｗｅ ａｃｔｕａｌｌｙ ｎｅｅｄｅｄ ｔｏ ｆｉｎｄ ａｂｏｕｔ ｔｈｅ ａｍｏｕｎｔ ｏｆ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ｉｎ ｔｈｅ ｂｏｔｔｌｅ．
Ｅｄｗｉｎ：Ｉ ｔｈｉｎｋ ｔｈｅ ｅｘｐｅｒｉｍｅｎｔ ｗａｓ ａ ｓｕｃｅｓｓ。
Ｓｈａｌｉｎｉ：Ｗｅ ｐｕｔ ａ ｌｅａｆ ｉｎ ａ ｂｏｔｔｌｅ。Ｔｈｅｎ，ｗｅ ｓｗｉｔｃｈｅｄ ｏｎ ｔｈｅ ｌｉｇｈｔ ａｎｄ ｉ ｇｅｎｔｌｙ ｂｌｅｗ ｉｎｓｉｄｅ ｔｈｅ ｂｏｔｔｌｅ。Ｔｈｅｎ，ｗｅ ｐｕｔ ｔｈｅ ｇａｓ ｓｅｎｓｏｒ ｉｎｓｉｄｅ ｔｈｅ ｂｏｔｔｌｅ。
Ｅｄｗｉｎ：Ｗｅ ｓｅｔ ｔｈｅ ｄａｔａｌｏｇｅｒ ｔｏ ３０ｍｉｎｕｔｅｓ ａｎｄ ｗｅ ｗａｉｔｅｄ ｆｏｒ ３０ ｍｉｎｕｔｅｓ。Ａｆｔｅｒ ａｂｏｕｔ １５ ｍｉｎｕｔｅｓ, ｗａｔｅｒ ｄｒｏｐｌｅｔｓ ｃould ｂｅ ｓｅｅｎ。Ｔｈｅ ｌｅａｆ ａｂｓｏｒｂｅｄ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ｂｌｅｗ ｂｙ Ｓｈａｌｉｎｉ ａｎｄ ｇａｖｅ ｏｕｔ ｏｘｙｇｅｎ。
Ｓｈａｌｉｎｉ：Ｔｈｅ ｇｒａｐｈ ｏｎ ｔｈｅ ｄａｔａｌｏｇｅｒ ｓｈｏｗed ｔｈａｔ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ｗａｓ ａ ｌｏｔ
ａｔ ｆｉｒｓｔ ｂｕｔ ｔｈｅ ｌｅａｆ ａｂｓｏｒｂｅｄ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ａｎｄ ｄｅｃｒｅａｓｅｄ。
Ｅｄｗｉｎ：Ｉ ｔｈｉｎｋ ｔｈｅ ｅｘｐｅｒｉｍｅｎｔ ｗａｓ ａ ｓｕｃｅｓｓ。
Ｓｈａｌｉｎｉ：Ｗｅ ｐｕｔ ａ ｌｅａｆ ｉｎ ａ ｂｏｔｔｌｅ。Ｔｈｅｎ，ｗｅ ｓｗｉｔｃｈｅｄ ｏｎ ｔｈｅ ｌｉｇｈｔ ａｎｄ ｉ ｇｅｎｔｌｙ ｂｌｅｗ ｉｎｓｉｄｅ ｔｈｅ ｂｏｔｔｌｅ。Ｔｈｅｎ，ｗｅ ｐｕｔ ｔｈｅ ｇａｓ ｓｅｎｓｏｒ ｉｎｓｉｄｅ ｔｈｅ ｂｏｔｔｌｅ。
Ｅｄｗｉｎ：Ｗｅ ｓｅｔ ｔｈｅ ｄａｔａｌｏｇｅｒ ｔｏ ３０ｍｉｎｕｔｅｓ ａｎｄ ｗｅ ｗａｉｔｅｄ ｆｏｒ ３０ ｍｉｎｕｔｅｓ。Ａｆｔｅｒ ａｂｏｕｔ １５ ｍｉｎｕｔｅｓ, ｗａｔｅｒ ｄｒｏｐｌｅｔｓ ｃould ｂｅ ｓｅｅｎ。Ｔｈｅ ｌｅａｆ ａｂｓｏｒｂｅｄ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ｂｌｅｗ ｂｙ Ｓｈａｌｉｎｉ ａｎｄ ｇａｖｅ ｏｕｔ ｏｘｙｇｅｎ。
Ｓｈａｌｉｎｉ：Ｔｈｅ ｇｒａｐｈ ｏｎ ｔｈｅ ｄａｔａｌｏｇｅｒ ｓｈｏｗed ｔｈａｔ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ｗａｓ ａ ｌｏｔ
ａｔ ｆｉｒｓｔ ｂｕｔ ｔｈｅ ｌｅａｆ ａｂｓｏｒｂｅｄ ｔｈｅ ｃａｒｂｏｎ ｄｉｏｘｉｄｅ ａｎｄ ｄｅｃｒｅａｓｅｄ。
Friday, April 24, 2009
Tuesday, April 14, 2009
Observation&Prediction
Observation: the flower had more blue dye than the red dye.
Shalini:the blue dye was absorbed faster than the red dye.
Edwin:the blue dye was darker so it was absorbed faster.
Prediction:the blue dye was absorbed faster than the red dye.
Shalini:My prediction was right, I saw the blue dye being absorbed faster.
Edwin:My prediction was right as the flower absorbed more blue dye than the red dye.
Shalini:the blue dye was absorbed faster than the red dye.
Edwin:the blue dye was darker so it was absorbed faster.
Prediction:the blue dye was absorbed faster than the red dye.
Shalini:My prediction was right, I saw the blue dye being absorbed faster.
Edwin:My prediction was right as the flower absorbed more blue dye than the red dye.
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