BJU Earth Science - Ch. 8 Volcanos

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

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

A volcano is made of igneous rocks.

Pillow lava forms

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

A good example of a hydrothermal circuit is

Which of the following does not belong with the other three?

Which of the following volcanic structures is the most common?

The depression found at the top of most volcanic cones is called a(n) __________.

The VEI of a volcano's eruption is based on

Sills and dikes are products of intrusive volcanism.

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

Volcanoes are made of __________ rock.

Vertical is to dike as horizontal is to __________.

A mudslide caused by a volcano is called a __________.

The eruption of Mount Tambora affected not just the island where it occurred but the weather around the world too.

A vent in the ground through which hot gases escape is called a(n) __________.

Igneous features made by intrusive volcanism never appear above land.

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

When superheated water underground flashes to steam and is ejected from the ground, it forms a…

Which organisms make up the base or first step of the food chain around black smokers deep within the ocean?

Secular geologists believe that most of the earth's internal heat comes from __________.

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

The rate at which temperature changes with depth underground is called the __________.

Volcanoes are made of __________ rocks.

Large amounts of magma that collect and harden in chambers underground are known as __________.

Most of the world’s active volcanoes are located in one of two volcano belts.

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

Nothing lives near the black smoker vents along deep-sea mid-ocean ridges.

Geothermal energy has become a major source of electricity in the United States.

A volcanic crater is most clearly indicated on a topographic contour map by

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

Shield volcanoes have the highest VEI ratings.

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

The internal energy of the earth that is sometimes harnessed for man's use is called __________ energy.

Batholiths and laccoliths are both types of __________.

The geothermal gradient is highest in the __________.

Wall-like igneous intrusions are called __________.

The depression found at the top of most volcanic cones is called a __________.

Harnessing heat produced by magma to generate energy is called __________

Where are most of the volcanoes in the Pacific Oceanic Plate located?

The largest types of plutons are __________.

Geyser water is heated by magma.

What kinds of volcanoes would a young-earth geologist consider active on the basis of a biblical view?

According to the USGS, a volcano that has not erupted in historical times but is not significantly eroded is…

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

Geologists believe that the earth's interior temperature is highest in the __________.

Viscous lava contains more __________ than runny lava does.

The eruption of _________ was the largest volcanic event in recorded history.

A scale that geologists use to classify the destructiveness of a volcanic eruption is called the __________.

Lava with the highest silica content usually

Arrange the following intrusive volcanic formations in order of increasing size:

The term volcano originally came from the name for

When water heated underground rises to the surface as a liquid, it forms a(n) __________.

All volcanic emissions are types of extrusive volcanism.