Implementation should be undertaken only in appropriate settings and with appropriate parental or adult supervision. Warning is hereby given that not all activities are appropriate for all individuals or in all situations. In addition, your access to 's website is covered by 's Terms of Service and Privacy Policy. does not make any guarantee or representation regarding such ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information.īy accessing the science activity ideas on, you waive and renounce any claims against that arise thereof. provides science activity ideas for informational purposes only. The air pressure outside of the straw is therefore higher than that inside, pushing the water inward and canceling the gravitational force. When the amount of air is constant, larger volume leads to lower air pressure. Gravity pulling the water downward makes the air volume slightly larger. When the straw is lifted out of the solution, the rainbow tower doesn’t fall out because water’s surface tension makes sure the colored water and your thumb together create a sealed air chamber inside the straw. Why is it possible to keep the colored solution in the straw when it is lifted from the water? In this experiment, a straw is used to create the rainbow tower.Īlternatively, you can use a dropper to carefully layer the colored solution in a narrow test tube. If you have inserted the straw in the solutions from the least sugar to the most sugar, then the color don’t mix and you have a sugar water rainbow.Īnother principle illustrated in this experiment is air pressure. The solution with more sugar has higher density than the one with less sugar. Sugar water has higher density than plain water. Having different densities is why the different colors don’t mix. Each time, the straw is inserted half an inch deeper.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |