Earthquakes are a __________ __________ in the earth’s crust that occurs along a ___________ in the rock.

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Most active faults lie close to _________ __________.

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When slabs of rock give way, huge amounts of _________ are released, sending out ___________ waves.

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The point underground where this happens is the ________ of the earthquake.

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The closer to the ______________ of the earthquake, the more powerfully it will be felt. This is the point on the surface, directly above the focus.

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fault, energy, focus, sudden movement, plate boundaries, epicentre, seismic​

​Predicitng

They occur at predictable locations

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Foreshocks (tremors) sometimes come before a major earthquake but they are not reliable enough to be used as a warning

Think question – why are earthquakes more difficult to predict than volcanoes?​

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Subject | Subject

Some text here about the topic of discussion

​Earthquake features

The world's largest earthquake of the 20th century occurred on May 22, 1960 near Valdivia, in southern Chile. Magnitude of 9.5. It is referred to as the "Great Chilean Earthquake“.

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What do you think most of the damage

and deaths were caused by?

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Why were people as far away as the Philippines and Japan killed?

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The earthquake occurred beneath the Pacific Ocean off the coast of Chile – a __________ plate boundary (Nazca Plate is subducting beneath the South American Plate) Ground motion from this earthquake destroyed or damaged thousands of buildings. The Chilean government estimated that about 2,000,000 people were left homeless.

​Tsuami

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Tsunami = Tsunamis are ocean waves triggered by the energy from large earthquakes that occur near or under the ocean. They grow as they approach land.

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This is one of the few earthquakes that has killed large numbers of people at distant locations. Tsunamis generated by the earthquake travelled across the Pacific Ocean at a speed of over 200 miles per hour. Changes in sea level were noticed all around the Pacific Ocean basin.

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​Richter scale

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​24th August 2016: Amatrice, Italy

​Impacts of Earthquakes Italy: Amatrice 2016