Earth Science Chapter 8 Test

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

Cinder cone is a volcano that emits mostly cinders, ashes, and bombs.

Which of the following volcanic structures is most common?

Lava is magma that reaches the earths surface.

The largest types of plutons are _______________.

All volcanic emissions are types of extrusive volcanism.

Glowing avalanche

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

The viscosity of lava depends mainly on its

A bomb is a streamlined mass of ejected lava that has solidified in flight.

Pillow lava forms

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

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

A layer of loose pyroclastic materials and ash covering the ground is called

Looking at a volcano from a distance, its most recognizable feature is its

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

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

Lava

Bomb is a volcano that emits mostly lava in quiet eruptions.

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

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

pillow lava

Volcanoes are made of _____________ rocks.

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

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

pahoehoe

fumarole

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

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

The term volcano originally came from the name for

tephra

Ash is tiny, angular, glassy fragments

An active volcano is a volcano having no historical record of eruption.

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

'a'a

A mudslide caused by a volcano is called a ________.

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