Is 688 tonnes as heavy as a Grain of Sand?
It's about 150,000,000,000 times as heavy as a Grain of Sand
The weight of a Grain of Sand is about 0.00000000440 tonnes.
(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000000440 tonnes. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
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