Science·Volcanoes & Earthquakes·conceptual
Eruption Types & Volcano Shape
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
Suggested ages 9–11
Learning journey
Your child is exploring how Earth's powerful forces work — understanding what causes volcanoes and earthquakes, how scientists monitor them, and how communities prepare for these natural events.
Evidence of understanding
- 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
Assessment prompt
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?
Standards alignment
No external standards are linked to this topic.