Igneous Rocks and Volcanology Quiz

What determines the type of igneous rock that will form based on magma properties?

• Color of the magma

• Viscosity and composition of the magma

• Temperature outside the volcano

• Height of the volcano

Which type of volcano is typically associated with highly viscous magma?

• Lava dome

• Cinder cone volcano

• Composite volcano

• Shield volcano

What is a common method used to mitigate the dangers of living near a volcano?

• Evacuation plans

• Building thicker roofs

• Planting more trees around the volcano

• Increasing air traffic

Which eruption style is characterized by explosive outbursts and is commonly associated with composite volcanoes?

• Vulcanian

• Strombolian

• Plinian

• Hawaiian

What type of tectonic setting is most likely to form a shield volcano?

• Transform fault boundaries

• Convergent boundaries

• Divergent boundaries

• Isolated hotspots

What type of volcanic material is typically ejected during a Plinian eruption?

• Lava flows

• Ash and pumice

• Large boulders

• Mudflows

How do divergent boundaries contribute to volcanic activity?

• By subducting one plate under another

• By creating rifts where magma can rise

• By sliding plates past each other

• By compressing crustal material

Which type of igneous rock forms from the fastest cooling lava?

• Granite

• Basalt

• Gabbro

• Rhyolite

What type of volcanic activity is most commonly associated with the formation of basaltic lava?

• Plinian eruptions

• Strombolian eruptions

• Hawaiian eruptions

• Vulcanian eruptions

Which mineral is typically found in high concentrations in a rhyolite rock?

• Pyroxene

• Quartz

• Olivine

• Calcite