To Do


351. Know the difference between aa and pahoehoe

My Story

Completed May 1998

I learned this as part of a physical geography class that I took in college, when we learned all about volcanoes. They’re Hawaiian words for different types of lava. Aa (pronounced ah-ah) is cooler, and therefore thicker and blockier. Pahoehoe (pronounced pa-ho-ee-ho-ee) is hotter and flows smoothly.

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