Earth Science Chapter 8

a volcano that emits mostly cinders, ashes, and bombs

Which of the following is not a term related to a volcano’s activity?

A spring that periodically ejects large quantities of hot water and steam

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

A scale that geologists use to classify the destructiveness of a volcanic eruption

Geyser water is heated by magma.

Geothermal power plants

Produces more death than flowing lava

Vertical is to dike as horizontal is to ___

Wall-like igneous intrusions

streamlined mass of ejected lava that has solidified in flight

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

A volcano is made of igneous rocks.

A mudslide caused by a volcano

A rapid downhill movement of hot, solid, volcanic particles suspended in steam

Which of the following volcanic structures is the most common?

Which of the following volcano types takes up the most land area?

Type of rock that volcanoes are made from

The VEI scale rates volcano activity only on the basis of the volume of rock discharged during an eruption.

Batholiths and laccoliths

a volcano that emits mostly lava in quiet eruptions

Some batholiths are known only because their tops have been exposed by erosion.

magma that reaches the earth’s surface

The internal energy of the earth that is sometimes harnessed for man’s use

The depression found at the top of most volcanic cones

The term tephra is used to describe lava that has cooled and solidified on the ground.

Thick layers of igneous rock covering large portions of the earth

Most active volcanoes in the world are

tiny, angular, glassy fragments

Mineral terraces are often associated with __

This affects the viscosity of lava

A good example of a hydrothermal circuit

Secular geologists believe that most of the earth’s internal heat comes

a volcano having no historical record of eruption and showing no seismic indications of activity

The geothermal gradient is highest in the ___

The largest volcanic eruptions in the history of the earth were probably similar to

Volcanoes can be classified by age, structure, and activity.

The geothermal gradient shows a constant rate of change in the earth’s internal temperature.

an enlarged depression that is caused by an explosion or the collapse of a volcanic cone

a volcano that has not erupted in historical times but is not significantly eroded

Which of the following statements describes a typical young-earth geologist’s view of volcanoes?

Sills and dikes are products of intrusive volcanism.

Widespread, thick layers of lava covering millions of square miles.

a volcano that emits lava and solid debris in alternately quiet and explosive eruptions

What kinds of volcanoes would be considered active on the basis of a biblical view of Earth’s history?