Plate boundaries Flashcards

1
Q

what are s-waves

A

slow
dangerous
move side to side

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2
Q

what are p-waves

A

first to arrive
not dangerous
move up and down

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3
Q

what is the focus

A

the place inside Earth’s crust where an earthquake originates

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4
Q

what is the epicentre

A

the location on the surface of the Earth directly above where the earthquake starts.

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5
Q

Destructive plate boundary

A

when a oceanic plate and a continental plate meet causing the denser plate to submerge. As the oceanic plate is submerged it melts creating magma which breaks to the surface to form deep sided compute volcanoes. Eruptions are often violent and destructive.

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6
Q

Constructive plate boundary

A

two plates are moving apart. magma is firing its way to the surface . as it breaks through the overlaying crust it causes earthquakes. on reaching the surface it forms volcanoes

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7
Q

Conservative plate boundary

A

two continental plates going past each other. They either move in opposite directions to each other or in the same direction but at different speeds . Earthquakes occur as the plats jerk past each other

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8
Q

Destructive plates cause

A

Earthquakes and volcanoes

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9
Q

Constructive plates cause

A

volcanoes

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10
Q

Conservative plates cause

A

Earthquakes

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11
Q

how are earthquakes formed at destructive and conservative plate boundaries

A

as the plates collide or move past each other they get stuck and pressure builds up .when the pressure gets too much it breaks and releases form the focus causing an earthquake

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12
Q
A
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