Volcanic Eruptions Quiz

What type of magma has the highest silica content?

• Basaltic

• Andesitic

• Rhyolitic

• Ultramafic

Which magma type is the least viscous?

• Basaltic

• Andesitic

• Rhyolitic

• Granitic

What type of volcanic material is formed from gas-filled lava that cools quickly and is lightweight?

• Obsidian

• Pumice

• Basalt

• Granite

What is the name of the volcanic material that forms when lava solidifies into fragments during an eruption?

• Cinders

• Tuff

• Lava bombs

• Scoria

Which volcanic material has a dark color and is full of gas bubbles?

• Scoria

• Pumice

• Ash

• Obsidian

What volcanic style is characterized by effusive eruptions and the creation of lava flows?

• Explosive

• Strombolian

• Hawaiian

• Vulcanian

What type of volcanic style is known for short, violent eruptions of thick magma?

• Strombolian

• Vulcanian

• Hawaiian

• Plinian

Which volcanic style involves highly explosive eruptions that produce large amounts of ash and pumice?

• Plinian

• Hawaiian

• Strombolian

• Icelandic

What is the term for the fine volcanic material that can travel thousands of kilometers in the atmosphere?

• Lava bombs

• Ash

• Cinders

• Scoria

What is the primary gas released during a volcanic eruption?

• Oxygen

• Carbon dioxide

• Water vapor

• Nitrogen