plate boundaries and case studys Flashcards

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1
Q

what plate boundary is this

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A

destructive plate boundary

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2
Q

what are the plates for a destructive plate boundary

A

nazca plate and the south american plate

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3
Q

what plate boundary is this

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A

constructive plate boundary

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4
Q

what plates are needed for a constructive plate boundary

A

north american plate and eurasian plate

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5
Q

what plate boundary is this
#
>

A

collision plate boundary

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6
Q

what plates are needed for a collision plate boundary

A

eurasian plate and indo-australian plate

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7
Q

what plate boundary is this

|

A

conservative plate boundary

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8
Q

what plates make up a conservative plate boundary

A

the pacific plate and north american plate

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9
Q

where is mount st. helens

A

washington state usa

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10
Q

what did scientist observe on the north side of the volcano

A

a strange lump, they thought it was magma for sure

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11
Q

how many years was the volcano dormant for

A

123 years

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12
Q

on what morning was there a huge earthquake that collapsed the north side of the mountain

A

18 may 1980

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13
Q

for how many hours did mount st. helens erupt for

A

nine hours and gently for four more days

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14
Q

how hot was the cloud

A

between 100°C and 300°C

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15
Q

where is christchurch

A

new zealand

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16
Q

what day did the earthquake in christchurch happen

A

22 february 2011

17
Q

how long did the earthquake last ( christ church )

A

only 12 second

18
Q

how many lives did it take ( christ church )

A

185

19
Q

where does new zealand lie

A

in the ring of fire

20
Q

what plates where involved ( christ church )

A

the australian plate forced under the pacific

21
Q

what was the earthquakes magnitude and the magnitude of the aftershock ( christchurch )

A

earthquake-7.1

after shock-6.3