What is the main theme of the introduction section about volcanoes?

• The unpredictability and power of volcanic eruptions

• The beauty of volcanoes

• The history of volcanoes

• The economic impact of volcanoes

Which of the following is NOT a component expelled during a volcanic eruption?

• Gas

• Ash

• Water

• Molten lava

What happens to the elements expelled during a volcanic eruption?

• They remain on the ground

• They are absorbed by the earth

• They are sent up into the sky

• They disappear

Which of the following volcanoes is located in Japan?

• Mount St. Helens

• Mauna Loa

• Mount Fuji

• Arenal

Which volcano is part of the 'Ring of Fire'?

• Galeras

• Etna

• Krakatoa

• Vesuvius