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

Magma leaves a volcano through a....

Explosive eruptions occur if a volcano's magma is

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

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

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

The main hazard from a quiet volcanic eruption is _____________

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

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

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

What volcanoes are described as having a wide base?

At what type of plate boundary are most above sea volcanoes found?

Between what 2 types of crust are most above sea volcanoes located? (throwback to Unit 1)

This is where the volcanic materials that erupt are stored

How fast a lava is able to flow is based on its

A fluid's thickness and resistance to flow is called....

From what layer of the earth would volcanic magma come from?

Which is the hotter lava?

A common mafic lava flow?

This picture is most likely what type of lava?

When volcanic ash mixes with water, it forms violent mudflows called ______________

One of the biggest risks of volcanic ash is

Chunks of magma that are cooled into rocks as they are thrown in the air are

What happened to the people in the picture from Pompeii