Exam 12: Tectonics, Earthquakes, and Volcanism

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Discuss common volcanic landforms.

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A crater is a circular surface depression usually found at or near the volcano summit.
A cinder cone is a small, cone-shaped hill usually less than 450 m (1500 ft.) high, with a truncated top formed from cinders that accumulate during moderately explosive eruptions. A caldera is a large, basin-shaped depression that forms when summit material on a volcanic mountain collapses inward after an eruption or loss of magma.

Mounting evidence indicates that the dramatic increase in the number of earthquakes in the central United States is caused by

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E

A large region where a craton is exposed at the surface is known as a

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The study of plate boundaries and the frequency of past earthquakes in order to forecast earthquakes is known as

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Strain,the amount of deformation undergone by an object,is expressed in rocks by

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A _____forms when an area resembling a syncline is uplifted and then eroded over time.

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A _____occurs when the fault plane forms a low angle relative to the horizontal,resulting in the overlying block being shifted over the underlying.

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Molten rock that pours forth on Earth's surface is called

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  <B>Types of faults </B>  Tensional stress along a fault can result in a dropped hanging-wall block relative to the footwall side,producing a Types of faults Tensional stress along a fault can result in a dropped hanging-wall block relative to the footwall side,producing a

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Normal faults are associated with

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Discuss the process and causes of folding,and distinguish between anticline and syncline.

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Rough,sharp-edged lava is known as

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Increased seismicity in Colorado,New Mexico,and Oklahoma has been linked to

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  <B>Folded mountains at the edge of the Zagros Crush Zone,Iran</B>   The Zagros mountains of Iran is an example of Folded mountains at the edge of the Zagros Crush Zone,Iran The Zagros mountains of Iran is an example of

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Orogenesis refers to

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  <B>Earthquake hazard map for the United States.</B>   Within the United States,which area has the highest earthquake hazards? Earthquake hazard map for the United States. Within the United States,which area has the highest earthquake hazards?

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  <B>Types of faults</B>   When lateral shear causes horizontal movement along a fault plane,the resulting fault is called a Types of faults When lateral shear causes horizontal movement along a fault plane,the resulting fault is called a

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The nucleus of old crystalline rock in each of the principal continental masses is called a

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The energy released by a magnitude 8 quake on the Richter scale is how many times greater than that of a magnitude 6 quake?

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Lava that forms ropy cords in twisted folds is called

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