Volcanoes 101

Where are most volcanoes located?

• Deep within continental landmasses

• Along the boundaries where tectonic plates meet

• Exclusively on the ocean floor

• Randomly distributed across the Earth's surface

Which of the following is NOT a major type of volcano mentioned?

• Stratovolcanoes

• Shield volcanoes

• Cinder Cone volcanoes

• Calderas

What is the term for molten rock that has erupted and is flowing on the Earth's surface?

• Magma

• Ash

• Lava

• Pyroclastic flow

How does the Volcanic Explosivity Index (VEI) scale measure the power of eruptions?

• Each successive magnitude is 10 times more powerful than the one before it

• Each successive magnitude adds 10 units to the previous power level

• It measures the total volume of ash released in cubic meters

• It is a linear scale based on the height of the eruption cloud