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Posts tagged building sand castles

July 22, 2005

 

Why Wet Sand Sticks

Your five-year-old knows when it comes to building sand castles at the beach, wet sand is much better than dry. If you fill your bucket with dry sand and turn it over, you’re likely to end up with a tumbled ruin, not a proud tower or turret. Any junior civil engineer will tell you to use damp sand from the water’s edge to construct proper parapets. Learn more on this Moment of Science.

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