What ingredient in magma determines whether a volcano eruption will be explosive or effusive?

Volcanoes are found at all of the following except

The majority of volcanoes are found at a ___

A ___ is found in the middle of a tectonic plate

____ is a fluid's resistance to flow

Molten rock BELOW the surface of the Earth is called __

ALL of the material thrown into the air during a volcanic eruption is called ___

The different types of volcanoes are based on __

The rapidly moving gaseous volcanic material is called ___

The most geologically active region on Earth is ___

Which of the following is a volcano that will never erupt again?

Which of the following is a volcano that has not erupted recently but probably will sooon?

Which of the following is a volcano that has erupted recently?

What is the name given to the opening of a volcano?

The Hawaiian islands are found at which geological feature?

Water heated under the surface of the Earth and erupts through a narrow opening is called a ___.

Which of the following is not evidence that scientists use to predict an imminent volcanic eruption?

Earthquakes generally are found where active volcanoes are located but volcanoes are not always found where earthquakes occur

Energy travels in the form of ___

Which type of seismic wave causes the most damage?

Which type of seismic wave is the fastest?

Most earthquakes are followed by a(n) ____

What is the highest possible magnitude on the Richter scale?

The San Andreas Fault is a ____ boundary

A ____ is used to measure earthquakes

Which of the following does not cause injury or death after or during an earthquake event?

Earthquakes happen most often at a boundary, specifically a convergent and transform boundary