Volcano Review

The long tube in the ground that connects the magma chamber to Earth's surface is called the _____________.

• Crater

• Pipe

• Vent

• Magma Chamber

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

• Silica

• Lava

• Rock

• Molten

Magma leaves a volcano through a....

• Sill

• Vent

• Chamber

• Crater

Explosive eruptions occur if a volcano's magma is

• high in viscosity

• Mafic

• Low in viscosity

• Extremely hot

When a volcano erupts quietly, what kind of mountain forms?

• A Shield Volcano

• A Cinder Cone Volcano

• A Composite Cone Volcano

TRUE or FALSE: A volcano that erupts quietly will produce a lot of cinders, ash, and bombs

• TRUE

• FALSE

What provides the force that causes a volcano to become explosive?

• Mafic flows

• Magma density

• Dissolved gases trapped in magma

• Extreme heat

The main hazard from a quiet volcanic eruption is _____________

• Volcanic gases

• Lava Flows

• Pyroclastic Flows

• Geysers

Volcanoes with steep sides made of layers of ash is called......

• Cinder Cone

• Shield Volcano

• Composite Volcano

Tall, cone-shaped mountains made of both cooled lava layers and layers of ash are called

• shield volcanoes

• composite volcanoes

• lava plateaus

• cinder cone volcanoes