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A Physical GEOGRAPHY > Tectonic Hazards > Flashcards

Tectonic Hazards Flashcards

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1
Q

Subduction

A

Process of oceanic lithosphere colliding with and descending beneath the continental lithosphere

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2
Q

Interplate

A

Boundary BETWEEN two plates

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3
Q

Intraplate

A

WITHIN the plates

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4
Q

Convection

A

Movement caused within a fluid.

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5
Q

Details about convection (density)

A

Hotter, less dense material rises
Colder, denser material sinks
Results in transfer of heat

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6
Q

Seismic

A

Vibrations of the earth
Radiate from focus of an earthquake

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7
Q

Seismic waves

A

Elastic wave produced by earthquakes

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8
Q

Slab pull

A

Pulling force exerted by a cold, dense oceanic plate plunging into the mantle due to its own weight

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9
Q

Theory about slab pull

A

Oceanic plate is denser than the hotter mantle beneath it so density causes it to sink into the mantle

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10
Q

Destructive (oceanic- continental) movement

A

Plates collide, the oceanic plate is subducted

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11
Q

Destructive (oceanic- continental) earthquakes

A

Very violent, up to 9.0 on the Richter scale

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12
Q

Destructive (oceanic- continental) volcanoes

A

Explosive and destructive

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13
Q

Destructive (continental- continental) movement

A

Plates collide creating a mountain belt

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14
Q

Destructive (continental- continental) earthquake

A

Very violent, up to 8.0 on the Richter scale

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15
Q

Destructive (continental- continental) volcanoes

A

Very rare, but devastating

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16
Q

Constructive (oceanic- oceanic) movement

A

Plates move apart

17
Q

Constructive (oceanic- oceanic) earthquakes

A

Minor, up to 5.0-6.0 on the Richter scale

18
Q

Constructive (oceanic- oceanic) volcanoes

A

Effusive, non violent

19
Q

Conservative (continental- continental) movement

A

Plates slide past each other

20
Q

Conservative (continental- continental) earthquakes

A

Very violent, up to 8.0 on the Richter scale

21
Q

Conservative (continental- continental) volcanoes

A

None

22
Q

Mid plate hotspot movement

A

Plates move over a zone of magma convection

23
Q

Mid plate hotspot earthquakes

A

Minor up to 5.0-6.0 on the Richter scale

24
Q

Mid plate hotspot volcanoes

A

Effusive, non violent

A Physical GEOGRAPHY (16 decks)

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