Magma types

Front

What is a pocket of magma beneath a volcano?

Back

Magma chamber: A large underground pool of molten rock found beneath the surface of the Earth.

Front

List the magma types in order of decreasing viscosity (most viscous listed first).

Back

Rhyolitic, Andesitic, Basaltic: Rhyolitic magma is the most viscous, followed by andesitic, and then basaltic, which is the least viscous.

Front

Where can volcanoes be found?

Back

Volcanoes can be found on land, under water, and on islands.

Front

Which type of magma has the lowest gas content?

Back

Basaltic Magma: It has the lowest gas content compared to andesitic and rhyolitic magmas.

Front

What is pyroclastic material?

Back

Pyroclastic material includes dust, ash, and other volcanic materials that are expelled during an eruption.

Front

What is the primary component of basaltic magma?

Back

Basaltic magma is primarily composed of low-silica content, making it fluid and less viscous.

Front

What is the significance of gas content in magma?

Back

Gas content affects the explosiveness of a volcanic eruption; higher gas content can lead to more explosive eruptions.

Front

What type of volcano is primarily formed by basaltic magma?

Back

Shield volcano: These volcanoes have gentle slopes and are formed by the flow of low-viscosity basaltic lava.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has reached the surface.

Front

What is an example of a volcanic eruption that produced pyroclastic flows?

Back

The eruption of Mount Vesuvius in 79 AD produced deadly pyroclastic flows that buried the cities of Pompeii and Herculaneum.