W01 Most of the earth is covered by water....
Right: ..... as oceans, as ice of Arctica and Antarctica.
(Click the photo from the space to enlarge it):
The clouds on the photo are tiny water dops or ice crystals. Less than one third of the earth are land.

Left: This iceberg (marked by 4 arrows) break off Antarctica. Scientists have measured that it had the size of Jamaika. It is difficult to imagine such huge quantities of water!
Even one litre is far too much for your experiments. You will divide it into smaller and smaller portions and calculate volumes of these microscale quantitities.


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