Volcanoes

Pahoehoe is 

The major ingredient of magma is

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

A geologist observes an old lava flow made up of dark-colored basalt rock. This rock had?

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

What can be used to identify a substance or to predict how it will behave?

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

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

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

The formation of the Hawaiian Islands is one example of:

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

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

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

The volcanoes along converging oceanic plate boundaries may form

The viscosity of magma depends upon its silica content and its______________?

Volcanic belts form along:

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

When ash, cinders, and bombs build up in a steep pile around a volcanoes vent, the result is?

If there are many small earthquakes in an area near a volcano, geologists can infer?

A volcano that may erupt again at some time in the distant future is

Which of the following is tephra about the size of a grain of sand?

Before lava reaches the surface, the molten material is called

The main hazard from a quiet volcanic eruption is

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

Which type of rock would you expect to form as the result of an explosive eruption?

All of the following are examples of physical properties EXCEPT

In volcanic areas, groundwater heated by magma is a source of 

Magma that forces across rock layers hardens into a