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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Eruption Types & Volcano Shape

Science · Volcanoes & Earthquakes · conceptual

Understand that not all volcanic eruptions are the same: some flow gently (effusive) and some explode violently (explosive), depending on the properties of the magma, and that volcano shape is related to eruption type

What mastery looks like

  • Contrast effusive eruptions (gentle lava flows) with explosive eruptions (violent blasts of ash and rock)
  • Explain that eruption type depends on properties of the magma such as thickness and gas content
  • Connect volcano shape to eruption style: shield volcanoes from runny lava, steep cones from thick explosive magma

Check your understanding

If Eruption Types & Volcano Shape compared pictures of a gently oozing Hawaiian volcano and a violently erupting one like Mount St Helens, could they explain why eruptions look so different and how that relates to the volcano's shape?