Volcanoes

When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is a 

Name the type of volcano found in B.

What is made up of rocky particles about the size of a grain of sand?

When groundwater heated by magma rises to the surface and collects in a natural pool, it forms

What substance found in magma determines if a volcano will have a quiet or explosive eruption?

When magma hardens in a volcano's pipe, the result will eventually be a landform called a 

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

Magma that is formed across rock layers hardens into a 

Volcanic belts form along

How do volcanoes form at A?

The huge hole left by the collapse of a volcanic mountain is called a

Describe how volcano C forms.

If geologists detect many small earthquakes in an area near a volcano, what can they infer?

A mass of rock formed when a large body of magma cools inside the crust is called a 

Name the type of volcano found in A.

Pahoehoe is 

Name the type of volcano found in C. 

The volcanoes along colliding oceanic plate boundaries may form

Name the type of plate boundary shown at A.

Which type of rock would you expect to form as a result of an explosive eruptions?

A volcano that is not currently erupting but may erupt in the distant future is 

When many layers of thin, runny lava build up a high, level area, the result is a 

Before lava reaches the surface, the molten material is called

Describe how volcano A forms.

The formation of the Hawaiian Islands is one example of 

Describe how volcano B forms.

The main hazard from a quiet eruption is 

Name the plate boundary show at B.

Rock that forces itself between rock layers and is always younger than the rock around it is 

A volcano that is unlikely to erupt again is considered to be 

How do volcanoes form at B?

If a volcano's magma is high in silica, the volcano will probably

What triggers the small earthquakes that occur around a volcano before an eruption?

What provides the force that causes magma to erupt to the surface?

Tall, cone-shaped mountains in which layers of lave alternate with layers of ash are called