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Earthquake & Volcano

Unit Exam

QuestionAnswer
Areas of Earth's surface through which magma and volcanic gases pass. volcano
The body of molten rock that feeds a volcano. magma chamber
An opening at the surface of the Earth through which volcanic material passes. vent
Molten rock within the Earth. magma
Molten rock at the Earth's surface. lava
This material forms when magma is blasted into the air and hardens. pyroclastic
These types of volcanoes are built of layers of lava released from repeated nonexplosive eruptions. shield
These volcanoes are made of pyroclastic material usually produced from moderately explosive eruptions. cinder cone
These volcanoes are sometimes called "stratovolcanoes". They are one of the most common types of volcanoes. They form from explosive eruptions of pyroclastic material and lava. composite
A funnel shaped pit near the top of the central vent of a volcano. crater
A large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink. caldera
The instrument used to record earthquakes. seismograph
The point at which an earthquake begins. focus
Changes in the rock due to stress. deformation
The point on the Earth's surface directly above the point at which energy is released. epicenter
Breaks in the Earth's crust. fault
Strike-slip faults are created by this type of boundary. transform
The measurement of the strength of an earthquake. magnitude
Created by: halerz
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