This
beach pail holds 3,500,000,000 grains of sand!
The typical peanut butter and jelly sandwich eaten on the beach contains over 7,000 grains of sand!
Certain
beaches and sand dunes create mysterious sounds that scientists still don't
completely understand. They sing, whistle, boom, bark, and
even sound like a frog!
The rocks, pebbles, and sand on the beach are graded (sorted) by the waves. They vary in size from large pebbles down to very small ones, and finally to sand, which is almost pure quartz.
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