Wednesday, 15 January 2014

Sand ripple marks in a tank

Ever wondered how ripple marks form in wet sand? This ELI gives you the answer -
Sand ripple marks in a tank'
We have received a really good extension idea for this activity:-
The tank can be rolled back and forth on pieces of broom handle rather than lifting it up and down – less tiring and more controllable.  Once the ripples have formed, move the broom handles through 90 degrees and gently do the same back and forth motion.  You should be able to form ladder ripples.

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