Duplicate of Volcano Review

A dormant volcano may be expected to awaken in the future and become active. 

Pahoehoe and aa are produced during _______________ eruptions.

What is formed when plate movements cause the crust to bend downward?

Volcanic soils are fertile and good for farming because it contains __________.

A molten mixture of rock-forming substances, gases, and water found in the mantle is called

Characteristics of an explosive eruption include __________

An extinct or dead volcanoe is unlikely to erupt again.

An area where material from within the mantle rises and melts, forming magma is called a(n)

Quiet eruptions gradually build up a gently sloping volcanic mountain called a shield volcano.

Liquid magma flows upward through the crust because it is LESS dense than the solid material. 

Volcanoes which alternate with quiet and explosive eruptions are called _____.

California's faults, volcanoes, mountain ranges, and basins were created by ___________.

Ring of Fire is 

Major island arcs include 

Lava plateaus are made up of cool/hardened layers of thin,runny lava that flows over an area.

A mass of rock that formed when a large body of magma cooled inside the Earth's crust is called

A wide, gently sloping mountain made of hardened layers of low-silica lava is called a ______.

A pyroclastic flow is an explosive eruption that hurls out hot gases, ash, cinders and bombs. 

A string of islands created by volcanoes  is called

Ash, cinders, and bombs erupt explosively to form _______________ volcanoes.

A volcanic neck forms when magma hardens in a volcano's ________.

A weak spot in the crust where magma comes through is a(n) __________.

A hot spring is hot water and steam that erupts from the ground.

The less silica that magma contains, the thicker the magma is. 

During a volcanic eruption, magma moves from a chamber through a long tunnel called a tube.