Volcanoes: Earth's Fiery Giants

The video discusses the Earth's crust, highlighting its thickness and the presence of weak zones that lead to volcanic eruptions. It focuses on Mount Etna in Sicily, one of the most active volcanoes, describing its craters and the impact of its eruptions on agriculture. The Soufriere Hills volcano's 1995 eruption in Montserrat is also covered, detailing its destructive effects. The video explains how molten rock beneath the Earth's surface can reach high temperatures, leading to catastrophic eruptions when internal pressure builds up.

What is a notable feature of Mount Etna that contributes to its frequent eruptions?

• Its location near tectonic plate boundaries

• Its four distinct craters at the summit

• Its height above sea level

• Its proximity to the equator

What is the primary reason for evacuating areas around Mount Etna during eruptions?

• To prevent damage to infrastructure

• To avoid loss of agricultural land

• To ensure the safety of residents

• To protect wildlife habitats

Which volcanic eruption led to the destruction of Plymouth and the evacuation of a large portion of the population?

• Mount St. Helens

• Soufriere Hills

• Krakatoa

• Mount Etna

What is the main source of heat that drives the swirling currents of molten rock within the Earth?

• Radioactive decay of unstable heavy elements

• Friction between tectonic plates

• Heat from the Earth's core

• Solar radiation

What can happen when internal pressure within the Earth cannot be released gradually?

• The Earth's magnetic field strengthens

• New landforms are created

• A catastrophic explosion occurs

• The Earth's surface cools rapidly