Craters and calderas are depressions formed by volcanic activity. A crater is a funnel-shaped vent at the top of a volcano formed by eruptions. A caldera is a much larger, basin-shaped depression created when a volcano’s summit collapses inward following ...
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Pyroclast (from the Greek words for “fire” and “broken”) is the collective term for all fragmented material ejected by a volcano. This includes everything from fine volcanic ash and dust to medium-sized Lapilli and large volcanic bombs or blocks torn ...
Krakatoa (Indonesia) is the best example of a dormant volcano in this list. While it had a catastrophic eruption in 1883 and is active today (through its “child,” Anak Krakatau), it is often categorized as dormant in historical contexts because ...
Mount Kilimanjaro is located in the continent of Africa, specifically in the country of Tanzania. It is the highest peak in Africa, earning it the title of one of the “Seven Summits.” Its presence near the equator, yet featuring snow-capped ...
A seismograph is an instrument used to detect and record seismic waves (P, S and L waves). It consists of a weighted pen or electronic sensor that remains steady due to inertia while the surrounding frame moves with the shaking ...