Science experiments for children – Coloring daisies and celery. As the water moves through plants? Fill various transparent glass jars of colored water, and place in each some daisies. Observe what happens at regular intervals (eg every two hours). Recording observations made and after at least one day discuss the experiment.
photo credit: http://sarahlipoff.com/
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The water contained in the soil enters into the plant through the roots, more precisely through the thin membrane that covers them.
However the whole plant is able to take on water, as is the case for cut flowers, which have no roots.
From the external membrane water passes inside of the root and then rises towards the stem, branches and leaves. Finally he comes to flower.
Although a part of all this water absorbed by the plant is used for the metabolism, the greater part of it is lost by transpiration, so that to the plant remains around 1%.
The evaporation of water helps to keep the plant fresh and allows the entry of carbon dioxide, a vital element for the plant.
Another classic for this kind of experiment is the celery:
photo credit: http://tinkerlab.com/
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Science experiments for children – Coloring daisies and celery
Other links
http://sarahlipoff.com/2011/07/08/fun-summer-science-experiments/
http://www.gardenguides.com/74925-water-moves-through-plants.html
http://tinkerlab.com/2011/04/celery-experiment/
http://artfulparent.com/2011/07/painted-daisies-another-artful-science-experiment.html
http://www.education.com/activity/article/celery_stick_science_first/
