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

• Crater

• vent

• magma chamber

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

• magma

• lava

• pyroclastic material

• ash

Explosive eruptions occur if a volcano's magma is:

• high in viscosity

• Low in viscosity

• Extremely hot

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

• Magma density

• Extreme heat

• Dissolved gases trapped in magma

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

• Composite Volcano

• Cinder Cone

• Shield Volcano

Tags

NGSS.MS-ESS1-4

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

• Composite Volcano

• Cinder Cone

• Shield Volcano

What do we call molten hot liquid rock while it is still below the Earth's surface?

• Igneous

• Lava

• Magma

What volcanoes are described as having a wide base?

• Shield Volcanoes

• Cinder Cones

• Composite Volcanoes

A dead volcano is called _____

• active

• extinct

• dormant

A sleeping volcano is called ______

• active

• extinct

• dormant