Thursday, August 20, 2009

Osmosis Jones?

Joshua and Brian learned about osmosis through an experiment with raisins and water.  They both put a few raisins in a cup of water and let them sit for a day.  Today they looked at them and found them to be a lot larger and more plump.  They found that through the process of osmosis, the water had crossed through the raisins’ cell membranes and entered into the raisin, because water travels from greater concentration to an area of lesser concentration.  We found this experiment in Janice VanCleave’s Biology for Every Kid: 101 Easy Experiments that Really Work.    2009.8.20 072 2009.8.20 001

                        Before                                                          After

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