Earth Science 8 - Volcanoes

A pyroclastic flow or “glowing avalanche” contains both gases and hot solid particles.

Vertical is to dike as horizontal is to

What structure is #2 pointing to?

What structure is #1 pointing to?

A volcano begins to form when magma forces its way to the surface and breaks through, forming a hole or

A mudslide caused by a volcano is called a 

Volcano having no historical record of eruption and showing no seismic indications of activity deep underground

Which volcano structure is in the picture?

Volcanoes are made of ___ rocks.

Volcano that emits mostly lava in quiet eruptions

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

Geothermal energy has become a major source of electricity in the U.S.

Some volcanoes that were considered dormant have erupted with disastrous results.

Which volcano structure is in the picture?

What structure is #3 pointing to?

Streamlined mass of ejected lava that solidified in flight

Sills and dikes are products of magma.

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

Which of the following is not a term relating to the activity level of a volcano?

Which of these structure types is the most common for volcanoes?

A spring that periodically ejects large quantities of hot water and steam is known as a 

If a volcano’s magma is high in silica, the volcano will probably __ .

Pillow lava forms

Volcano that emits mostly cinders, ashes, and bombs

A depositional mountain built up by molten rock that has risen to the earth's surface through a vent.

What structure is #4 pointing to?

Which volcano structure is in the picture?

What is structure #6 called?

An enlarged depression caused by an explosion of the collapse of a volcanic cone

What is structure #4 called?

Which of these volcanoes is located in the state of Washington?

The depression found at the top of most volcanic cones.

Volcano that emits lava and solid debris in alternately quiet and explosive eruptions

The internal energy of the earth, generated largely by heat

Magma that reaches the earth’s surface

The Circum-Pacific volcano belt is sometimes called the Ring of Fire.

Tiny, angular, glassy fragments

What is structure #5 called?

Which of these lists is in correct order from smallest to largest?