volcanisme

Multiple Choice

Which of the following statements best describes the relationship between volcanic eruptions and plate tectonics?

• Volcanic eruptions are unrelated to plate tectonics.

• Volcanic eruptions are a manifestation of plate tectonics.

• All volcanoes erupt every year due to plate tectonics.

• There are no active volcanoes on Earth.

Open Ended

Why do you think volcanic eruptions are important to study in relation to plate tectonics?

Multiple Select

Which of the following are products emitted during an explosive volcanic eruption?

• Large quantities of gas

• Ash and rock fragments

• Fluid lava flows

• Projection of lava

Open Ended

Explain how the viscosity of magma affects the type of volcanic eruption.

Multiple Choice

What are the main differences between an effusive volcanic eruption and an explosive volcanic eruption?

• Effusive eruptions have fluid magma and gentle lava flows, while explosive eruptions have viscous magma and violent explosions.

• Effusive eruptions produce large quantities of gas and ash, while explosive eruptions produce only lava.

• Effusive eruptions occur only in oceanic volcanoes, while explosive eruptions occur only in continental volcanoes.

• Effusive eruptions are always more dangerous than explosive eruptions.

Open Ended

What triggers a volcanic eruption according to the text?

Multiple Choice

Which part of a volcano is responsible for storing magma before an eruption?

• Crater

• Magmatic reservoir

• Chimney

• Dust

Open Ended

Explain the difference between an effusive and an explosive volcanic eruption.

Multiple Choice

Which of the following statements about the distribution of volcanoes is correct?

• Volcanoes are randomly distributed across the globe.

• Volcanoes are mostly found along oceanic ridges and trenches.

• Volcanoes are only found on continents.

• Volcanoes are evenly spaced everywhere.

Multiple Select

Select all the correct statements about the formation of new oceanic crust at mid-ocean ridges.

• It is formed by the cooling of fluid lava.

• It is formed by the accumulation of dust.

• It is formed by the melting of continental crust.

• It is formed by the solidification of basalt.

Open Ended

Describe the process that leads to explosive volcanism at subduction zones.

Multiple Choice

Which type of volcanic eruptions are characteristic of subduction zones?

• Explosive eruptions

• Effusive eruptions

• Basaltic eruptions

• Shield eruptions

Open Ended

What is one thing you learned today about the connection between volcanism and plate tectonics?

Open Ended

How are volcanic eruptions related to plate tectonics?

Open Ended

Explain how the process of subduction leads to the formation of explosive volcanic eruptions, using information from both slides.