Page 38 - 新思维科学学生用书3 样章
P. 38

1.4  Plants need water and the right temperature




                 Think like a scientist 3

                 How does water move up a plant stem?


                   You will need: a pot of water, food colouring, a dropper or

                   a teaspoon, a white flower, celery, a clock, a knife


                 Look at diagrams 1 and 2.


                   1                                            2
                       Your apparatus to use.
                                                   dropper
                         knife


                                             white
                                            flower


                                    food
                                    colouring


                      celery

                     container of water



                 Put the flower and celery in the pot of water.

                 Add a few drops of food colouring to the water.

                 Predict what you think will happen.

                 Observe the pots every hour or two over a day.
                 Make drawings or take photographs to record what happens.

                 Was your prediction correct?

                 What does this tell you about water inside plants?

                 What kind of science enquiry was this?

















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