Volcanoes . Ms. scerra. Word Origin. Romans believed in Vulcan, their god of fire. They thought that Vulcan worked at a hot forge, striking sparks as he made swords and armor for the other gods. Hawaiians told legends of the wanderings of Pele, their goddess of fire.
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AA – thick, slow moving that hardens into rough tangle of sharp rocks.
Pahoehoe – thin, hot quick-moving lava that forms smooth, billowy surface.