Restless Earth Flashcards

1
Q

Caldera

A

A large ridge forming the edge of a super volcano, where the original cone has either collapsed or been destroyed in a large eruption

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2
Q

Conservative plate margin

A

A plate margin where the tectonic plates are sliding past each other

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3
Q

Constructive plate margin

A

A plate margin where the tectonic plates are moving apart

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4
Q

Continental crust

A

The part of the Earth’s crust that makes the continents

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5
Q

Destructive plate margins

A

A plate margin where the tectonic plates collide

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6
Q

Epicentre

A

The point on the ground directly above the focus of an earthquake

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7
Q

Focus

A

The point of origin of an earthquake

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8
Q

Magnitude

A

The size of an earthquake

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9
Q

Oceanic crust

A

The part of the crust which is below the ocean

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10
Q

Ocean trench

A

A deep depression on the ocean floor formed at the subduction zone of destruction plate margins

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11
Q

Plates

A

The large pieces of broken crust that covers the Earth

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12
Q

Plate margin

A

Boundary between two tectonic plates

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13
Q

Prediction

A

Forecasting future change

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14
Q

Primary effects

A

Impacts of a natural disaster that happened immediately or soon after the event

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15
Q

Response

A

The way in which people react to a situation e.g. An earthquake

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16
Q

Secondary effects

A

The after effects of a disaster e.g. disease spreads due to dirty water, loss of economy due to destruction of businesses

17
Q

Subduction

A

The transformation into magma of a denser tectonic plate as it dives under a less dense plate

18
Q

Super volcano

A

A volcano capable of erupting on a much larger scale than a normal volcano

19
Q

Tectonic hazards

A

Threats posed by earthquakes, volcanoes etc.

20
Q

Tsunami

A

Huge waves which are caused by an earthquake under the sea