earthquakes are caused by the movement of tectonic plates. earthquakes in wellington
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Earthquakes are caused by themovement of tectonic plates.
Earthquakes in Wellington
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What are Tectonic PlatesThis is an image of the earth's different layers.●Inner core
●Outer core
●Lower mantle
●Transition region
●Shallow mantle*
●Crust and Lithosphere
*The shallow mantle is divided into parts these parts are the tectonic plates
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Tectonic Boundaries
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How Earthquakes Occur
Australian Pacific
● Two plates such as the Pacific and Australian pushing towards each other create tension causing one of the plates to crack.
● Earthquakes happen in these faults because it is weaker at that point so it releases the tension there. The result, earthquakes.
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NZ Plate Boundaries
Plate edge
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Wellington/ Wairarapa faults
Australian plate
Pacific plate(sinking)
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Earthquakes on Richter scale
Location Magnitude DateEdgecumbe 6.6 1984San Francisco 7.8 19061855 Wairarapa 8.2 1855Sumatra 9.3 2004
Some earthquakes in the last 151 years
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Earthquake Energies Compared
Edgecumbe San Francisco 1855 Wairarapa
Sumatra0
100
200
300
400
500
600
Earthquake energy
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Edgecumbe EarthquakeCaused this damage
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Special thanks
Wikipidia.org
Wellington public libraries
Google.co.nz/images
KNS Libraries