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
Share and support
Teaching Table
Set out your lesson
“If your child 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?”
Full guide and materials
- Activity. 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 to notice. 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
Compare teaching approaches
Teaching approaches
Gakuva’s recommended starting approach is selected. You can still compare every option.
1 approach
If your child 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?
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
Family records and proof options
Keep a record of your learning
Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Learning resources
External links for extra practice. They do not replace Gakuva’s teaching approach.
No additional resources are listed for this topic.
The teaching approach appears above.
Check 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
“If your child 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?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Volcanoes & Earthquakes
- Age range
- Ages 9–11