What things come out of volcanoes?

rocky Melissa Peschar

Dear Melissa,

Lava, pyroclasts (broken pieces of lava that fly through the air), and gas comes out of volcanoes. We have described lava before. Pyroclasts are classified by size. Ash is the smallest pyroclasts. Blocks and bombs are the largest. Cinder and pumice are also types of pyroclasts. Water vapor, carbon dioxide, and sulfur dioxide are the most common gases.

Steve Mattox, University of North Dakota 

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