Where do volcanoes form?

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Presentation transcript:

Where do volcanoes form? Along _____________________ plate boundaries Along ocean ______________ (divergent ocean plates) Long ___________ valleys (divergent continental plates) Above ___________________

Are Volcanoes Destructive? An eruption can… Cause __________________ Cause earthquakes and _________________ Cause mudflows (______________) Create ______________ and flooding Contaminate _______________ and air Can an Eruption be Predicted? Volcanologists _________ successfully ______________some eruptions by monitoring ______________ activity, looking for changes in the surface, and monitoring volcanic ______________.

Anatomy of a Volcano

What is Magma? What is Lava? Magma is molten rock __________________ Earth’s surface. What is Lava? Lava is molten rock _________________________Earth’s surface.

What is Lava Lava is molten rock above Earth’s surface

Lava Types Pillow Lava Pahoehoe Lava A’a Lava Most abundant type. Formed under water. Second most abundant type. Formed by slow Cooling lava. Quick cooling, fast moving. https://www.youtube.com/watch?v=ddzU-rkzKF0&sns=em