Volcanoes are a favorite of kids, along with large-toothed dinosaurs of course. Most of us move on to smaller and gentler things, but a hardy few men and women persist and become volcanologists. Those people might get through this Geo-Whiz quiz on the subject of volcanoes, but I'll bet you can't without blowing your top.

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Finally a 100% test. And for me the first question was actually the toughest.