Ch. 5 Volcanoes

The main hazard from a quiet volcanic eruption is

Repeated floods of molten material can form high, level plateaus called magma plateaus.

A volcano erupts quietly if its magma is which of the following?

Not all volcanoes form along plate boundaries.

When a volcano collapses, a hole called a vent is left behind.

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

From what kind of lava does pahoehoe form?

Material from deep within Earth's mantle rises to the crust and melts form magma called

A volcano is a _____ that forms in Earth's crust when molten material reaches the surface.

Yellowstone National Park marks the location of a huge island arc.

is an underground molten mixture of rock-forming substances, gases,and water from the mantle.

Geologists detect small earthquakes near a volcano, what can they infer about the volcano?

The main factor that accounts for the difference between quiet and explosive volcanic eruptions

Magma is molten material from the mantle that has reached Earth's surface.

Which of the following is an opening through which molten rock and gas leave a volcano?

What do geologists call a volcano that is not likely to erupt ever again?

In which location would you most likely find volcanoes?

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

Volcanic belts form along the boundaries of Earth's

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

Volcanoes form along the mid-ocean ridges, where two plates move together.