COPY: Volcanic Activity Classification Quiz

The classification is based solely on the viscosity of the magma, with high viscosity indicating an active volcano.

Records of volcanic eruptions are the sole basis for classifying volcanoes as active or inactive.

The historical timeline method considers a volcano active if it has erupted within the past 10,000 years. (correct)

Volcanoes with a high silica content are always classified as active, regardless of their eruption history.

The silica content and viscosity of the magma. (correct)

The presence of groundwater near the magma chamber.

The type of eruption, such as Plinian or composite.

The height and shape of the volcano.

Volcanic belts form along the boundaries of Earth's tectonic plates. (correct)

Volcanic belts form in regions with a high concentration of hot springs.

Volcanic belts form in areas with frequent small earthquakes.

Volcanic belts form in regions with high silica content in the Earth's crust.

<p>Lava</p> Signup and view all the answers

<p>Hot springs are formed when groundwater heated by magma rises to the surface and collects in a natural pool.</p> Signup and view all the answers

<p>It means that the volcano is probably about to erupt.</p> Signup and view all the answers