Volcanoes MCQ Quiz and Flashcards

Study Notes

Earth's Crust and Volcanic Eruptions

The 18-mile thick layer of solid rock that we live on is called the lithosphere.
When two of the Earth's plates move together, they can collide and cause the Earth's surface to buckle, forming mountains or volcanoes.
Gas bubbles inside magma grow bigger when the pressure on them decreases, causing them to expand.
A volcano erupts when the pressure of the gas bubbles in the magma becomes too great, causing the magma to burst out of the ground.
When magma is runny and gas can escape easily, a gentle eruption is expected.
Knowing about the Earth's crust is important for understanding volcanic eruptions because it helps us understand the movement of tectonic plates and the formation of volcanoes.
The term used for molten rock that flows from a volcano is lava.
The smallest pyroclasts thrown from a volcano are called ash.
Volcanoes formed by runny lava spreading out over a wide area are called shield volcanoes.
Mount Fuji is an example of a strato-volcano.
Crater Lake in the United States was formed by a massive volcanic eruption that caused the volcano to collapse.

Description

Test your knowledge about volcanoes with this multiple choice quiz based on the characteristics and locations of active and extinct volcanoes around the world. Learn more about these fascinating geological features and their significance in understanding the Earth's composition.