A weak spot in the crust where molten material, or magma, comes to the surface

A molten mixture of rock-forming substances, gases, and water from the mantle

formed by the many volcanoes that rim the Pacific Ocean

an area where material from deep within the mantle rises and then melts forming magma

At some places on Earth’s surface, thin layers of lava pour out of a vent and harden on top of previous layers. Such lava flows gradually build a wide, gently sloping mountain

If a volcano’s lava has high viscosity, it may produce ash, cinders, and bombs. These materials build up around the vent in a steep, cone-shaped hill or small mountain called a cinder cone.

Composite volcanoes are tall, cone-shaped mountains in which layers of lava alternate with layers of ash.

When magma squeezes between horizontal layers of rock, it forms a sill.

Magma that forces itself across rock layers hardens into a dike.

Huge large body masses of rock from the core of many mountain ranges

Instead of forming mountains, some eruptions of lava form high, level areas called lava plateaus.

The volcano is extinct which means it will not be able to errupt again or do any harm

having normal physical functions suspended or slowed down for a period of time

The volcano is active and can errupt any time and do harm but also create beautiful landforms.

A substance that cannot be broken down into other substances

The physical property of liquids, the resistance of a liquid to flowing

Made up of particles of the elements oxygen and silicon

A substance made of two or more elements that have been chemically combined

Fine rocky particle as small as a speck of dust

Beneath a volcano, magma collects in a pocket

Forms on top of a volcano and around the central vent

Molten rock and gas leave the volcano through an opening

a long tube in the ground that connects the magma chamber to Earth’s surface.

The huge hole left by the collapse of a volcanic mountain

is an area where material from deep within the mantle rises and then melts, forming magma.

is a fountain of water and steam that erupts from the ground.

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Volcanoes

Question	Answer
Volcano	A weak spot in the crust where molten material, or magma, comes to the surface
Lava	When magma reaches the surface
Magma	A molten mixture of rock-forming substances, gases, and water from the mantle
Ring of Fire	formed by the many volcanoes that rim the Pacific Ocean
Hot Spot	an area where material from deep within the mantle rises and then melts forming magma
Shield Volcano	At some places on Earth’s surface, thin layers of lava pour out of a vent and harden on top of previous layers. Such lava flows gradually build a wide, gently sloping mountain
Cinder Cone Volcano	If a volcano’s lava has high viscosity, it may produce ash, cinders, and bombs. These materials build up around the vent in a steep, cone-shaped hill or small mountain called a cinder cone.
Composite Volcano	Composite volcanoes are tall, cone-shaped mountains in which layers of lava alternate with layers of ash.
Sill	When magma squeezes between horizontal layers of rock, it forms a sill.
Dike	Magma that forces itself across rock layers hardens into a dike.
Botholith	Huge large body masses of rock from the core of many mountain ranges
Lava Plateau	Instead of forming mountains, some eruptions of lava form high, level areas called lava plateaus.
extinct	The volcano is extinct which means it will not be able to errupt again or do any harm
dormant	having normal physical functions suspended or slowed down for a period of time
active	The volcano is active and can errupt any time and do harm but also create beautiful landforms.
Element	A substance that cannot be broken down into other substances
Viscosity	The physical property of liquids, the resistance of a liquid to flowing
Silica	Made up of particles of the elements oxygen and silicon
Pahoehoe	Hot, fast-moving lava
Aa	Cool, slow-moving lava
Compound	A substance made of two or more elements that have been chemically combined
Volcanic Ash	Fine rocky particle as small as a speck of dust
Magma Chamber	Beneath a volcano, magma collects in a pocket
Crater	Forms on top of a volcano and around the central vent
Vent	Molten rock and gas leave the volcano through an opening
Pipe	a long tube in the ground that connects the magma chamber to Earth’s surface.
Caldera	The huge hole left by the collapse of a volcanic mountain
Hot Spring	is an area where material from deep within the mantle rises and then melts, forming magma.
Geyser	is a fountain of water and steam that erupts from the ground.

Created by: 1965086572

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