Volcano Quiz

A sleeping volcano is called what?

• active
• dormant
• extinct

A low silica volcano makes what type of eruption?

• quiet eruption

• explosive eruption

A high silica volcano makes what type of an eruption?

• quiet eruption

• explosive eruption

This volcano is most likely which type of volcano?

• Felsic
• Composite
• Shield
• Cinder cone

As the temperature of lava increases, ________

• its viscosity decreases.

• it begins to harden.

• its viscosity increases.

• it can flow a much short distance.

Which list places the magma types in order of decreasing viscosity (most viscous listed first)?

• basaltic, andesitic, rhyolitic
• rhyolitic, andesitic, basaltic
• andesitic, basaltic, rhyolitic
• basaltic, rhyolitic, andesitic

Once magma reaches the earth's surface it is called.....

• Silica
• Rock
• lava

A huge hole that is left behind when a volcano collapses is called a

• Batholith

• Caldera

• Geyser

• crater

Cinder cones can be described as...

• Very large with gentle slopes and eruptions of low viscosity magma
• Large with steep slopes and violent eruptions of very viscous magma
• Small and clustered in groups with steep slopes and firey eruptions that occur only once

What is pyroclastic material?

• Dust, ash and other material that comes out of a volcano.
• A type of magma that is in a volcano.
• A type of volcano.