SortStack #2722 — 2033-11-21

By size · Order from shortest to longest.

1. A human red blood cell 8 µm

   Your body makes around 2 million of them every second to replace the ones that wear out after roughly 120 days.

2. A tournament chess pawn 3.7 cm

   Regulation sets fix the pawn's height relative to the squares so pieces never crowd the board.

3. A domestic cat (body length) 49 cm

   A cat has 32 muscles in each ear, letting it swivel them independently to pinpoint a sound's source.

4. Angel Falls, Venezuela 979 m

   The world's tallest waterfall is so high the water often atomises into mist before it ever reaches the ground.

5. The Kiel Canal, Germany 98 km

   The world's busiest artificial waterway, it lets ships skip the long, stormy voyage around Denmark.

6. The diameter of the Earth 12.7K km

   Despite feeling enormous, Earth is smoother than a billiard ball when you compare its bumps to its size.

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