Volcano Review

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

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

An ______ or dead volcano is unlikely to erupt again.

Ring of Fire is 

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

Volcanoes which alternate with quiet and explosive eruptions & layers of lava and tephra

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

Pahoehoe and aa are produced during _______________ eruptions.

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

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

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

Which of the following DOES NOT determine the viscosity of magma?

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

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

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

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

Ash, cinders, and bombs erupt explosively to form _____ volcanoes; most common type.

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

What is most characteristic of a quiet eruption?

Volcanic soil is extremely fertile.

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

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

A string of islands created by volcanoes are called

Characteristics of an explosive eruption include __________

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