Tsunami Flashcards

1
Q

Definition

A

Large wave that is caused by an under sea earthquake that displaces the water above it

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2
Q

Wave height

A

SHort (5-10m)

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3
Q

Wave length

A

really long 2000m

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4
Q

Speed

A

up to 500mph. reduces to 50.60mph when it reaches the shore

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5
Q

More powerful if…

A

It starts closer the the coast (less energy lost)

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6
Q

How are they formed at an oceanic subduction zone?

A

Where oceanic subducts under the continental causing vertical water displacement

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7
Q

how are they formed at destructive plate margins

A

a sudden slippage the upper plate rebounds upwards. Displacement causes a rising column of water

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