Across
- 2. when the top of a volcano collapses forming a circular depression
- 4. place in the middle of a tectonic plate where the mantle is thin and a volcano occurs
- 6. volcano that throw lava and rock high into the air
- 8. walled depression around a vent
- 10. volcano whose eruptions vary between quiet and violent
- 11. volcano in Oregon
- 14. most active volcano on Earth
- 15. volcano that had a violent eruption in 1883 in Indonesia
- 17. opening the Earth that erups gases, ash and lava
Down
- 1. type of magma that causes explosive eruptions
- 3. left when magma that hardens in a vent & the mountain erodes away
- 5. island formed by volcanic action at a divergent plate boundary
- 7. opening where lava flows out onto the Earth's surface
- 9. intrusive igneous rock feature formed when magma cooled and hardened into a dome underground
- 12. volcano with gently sloping sides
- 13. type of magma that causes quiet eruptions
- 16. mountain range that gave its name to a type of magma