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MJHS8 Volcano Vocab.

MJHS8 Volcano Vocabulary

QuestionAnswer
Huge hole left by the collapse of a volcanic mountain Caldera
Steep, cone shape volcanic hill or mountain Cinder Cone Volcano
Mountain formed when magma forces rock layers above it to bend upward Dome Mountain
Mass of rock formed when large body of magma cools inside crust Batholith
Tall, cone shaped volcano with alternating layers of lava and ash Composite (strato-) Volcano
Wide, gently sloping volcano made of several layers of hardened lava Shield Volcano
Flowing mix of gas and debris that follow some explosive eruptions Pyroclastic Flow
Reliable, clean energy source from water heated by magma Geothermal Energy
Material in magma formed from the elements oxygen and silicon; determines thickness Silica
Fast moving, hot lava Pahoehoe (mafic) Lava
Slow moving, cooler lava Aa (felsic) Lava
Magma that reaches the surface of the Earth Lava
Pocket below a volcano where magma collects Magma Chamber
Area covered by lava as it pours out of the vent Lava Flow
Long tube that connects the magma chamber and the surface Pipe
Bowl-shaped area that can forma round the vent of a volcano Crater
A weak spot in the crust where magma comes to the surface Volcano
Molten mixture of rock-forming substances, gases, and water Magma
Opening where gases and magma leave a volcano Vent
Produce lava that flows easily such as those in Hawaii Quiet Eruptions
Result from magma that is under extreme pressure; very violent Explosive Eruptions
High, level area formed from several layers of lava building up Lava Plateau
Vertical column of hardened magma Dike
Horizontal layer of hardened magma Sill
Formed when magma hardens in a volcano’s pipe Volcanic Neck
Created by: aaron.blake
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