Earthquake/Volcano Flashcards

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1
Q

a break in a body of rock along which one block slides relative to another

A

fault

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2
Q

as

A

ring of fire

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3
Q

the boundary between tectonic plates that are sliding past each other horazontally

A

transform / strike-slip

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4
Q

the boundary between two tectonic plates that are moving away from each other

A

divergent / normal

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5
Q

the boundary formed by the collision of two lithospheric plates

A

convergent / reverse

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6
Q

a seismic wave that causes particles of rock to move in a back-and-forth direction

A

P-waves

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7
Q

a seismic wave that causes particles of rock to move in a side-to-side direction

A

S-waves

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8
Q

the point on Earth’s surface directly above an earthquake’s starting point

A

epicenter

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9
Q

the point along a fault at which the first motion of an earthquake occurs

A

focus

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10
Q

as

A

Richter scale

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11
Q

as

A

explosive volcano

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12
Q

as

A

nonexplosive volcano

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13
Q

a volcanic island situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung

A

Krakatoa

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14
Q

as

A

Yellowstone supervolcano

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15
Q

as

A

San Andreas fault

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16
Q

a long, undersea mountain chain that forms along the floor of the major oceans

A

Mid-oceanic ridge

17
Q

a type of volcano usually built almost entirely of fluid lava flows

A

shield volcano

18
Q

a steep conical hill of loose pyroclastic fragments

A

cinder cone volcano

19
Q

a conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash

A

composite volcano

20
Q

a volcanically active area of Earth’s surface far from a tectonic plate boundary

A

hot spot