Preview
يُعرَّف البركان بأنه فتحة أو شق في القشرة الأرضية يخرج منها صهير صخري ساخن (الحمم) ومواد صلبة وغازات ساخنة، مشكّلة مع الزمن هضبة أو جبلاً مخروطياً. تُعد البراكين جزءاً من العمليات الجيولوجية الداخلية للأرض.
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