第四回　葉子的工作 - 蒸騰作用

Chapter 4   Function of the Leaf - Evaporation

 觀察時間：9 月 22 - 27 日

Observation Period: September 22^nd - 27^th

 蒸騰作用是葉子利用葉面上的氣孔蒸發水份產生向上壓力，以把礦物質由根部抽到植物中。

Evaporation is a process when water vapour is released through the stoma so as to draw the mineral from the roots.

 小活動 Activity：

把葉片用膠袋和橡筋封著，等待 30 分鐘，然後看看膠袋中有什麼變化？

Cover the plant with the plastic bag and the rubber band.  Wait for 30 minutes, then find out what you can see inside the bag.

我的觀察結果　My observation:

封著葉片的膠袋裡充滿了ˍˍˍˍ___________ˍ。

The plastic bag is filled with ___________________.