let's play with water
Post on 22-Mar-2016
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DESCRIPTIONworkshop from the foundation randy explorer we did them in costa rica
The project of 2008-2009
Together for Water
Is part of the decade
Voted by the UNO
Water: Source of Life
The system of circulation in plants
We put celery in water with colorant.
After 30 minuts we can obser how the celery absorbed the liquid.
Activity II La osmosis
We put some seeds in water.
The seeds started to move rapidly in contact with water, as if they were dancing
Osmosis is the diffusion of a solvent (frequently water) through a semi-permeable membrane, from a
solution of low solute concentration (high water potential) to a solution with high solute concentration
(low water potential), up a solute concentration gradient.
It is a physical process in which a solvent moves, without input of energy, across a semi-permeable membrane (permeable to the solvent, but not the
solute) separating two solutions of different concentrations.
Osmosis releases energy, and can be made to do work, as when a growing tree root splits a stone .
Superficial tension of water.
The kids have too make a needle float on water.
That was easy to until we add liquid soap, at this time surface tension broke and the needle went to the bottom.
See you soon !