Earth Science Facts

The planet underfoot and the ocean on top of it, cited to the surveys that measure them.

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50 cryptograms, each one a fact written for this site rather than a sentence taken from a book. Cited to 8 sources, NOAA the most common.

Sources

SourceFacts

How hard they are

3 easy, 38 medium and 9 hard, graded by the model described in our guide to solving cryptograms.

They average 74.1 letters over 19.3 distinct ones, with 4 letters appearing exactly once.

TierCryptogramsPlay

Every one of them

Each has a page of its own naming its source, and its answer on a separate page so you will not run into it by accident.

Source

Other fact collections

CollectionCryptograms

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