Earthquakes by Leigha Greene

What do earthquakes have to do with waves

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Seismic waves are basically enegry that travel through the earths

layers. From the movement of the earth when earthquakes form, it causes explosion or

eruption of volcanos.

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Theory of plate tectonics

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The Lithosphere is divided into plates and move around, across the earths surface.

Vocabulary

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Lithosphere

Asthenosphere

S wave and P wave

Divergent

Convergent

What is the continental crust?

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The relatively thick part of the earth's crust that forms the large landmasses.

What is the oceanic crust?

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The relatively thin part of the earth's crust that underlies the ocean basins.

Recent earthquakes location

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island of Hawaii

Samoa Islands region

New Britain region, Papua New Guinea

FACTS

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- The Himalaya-Karakoram was created by the movement of tectonic plates.

- Earthquakes can also be called, a quake, tremor or temblor.

- Earthquakes can cause fires by damaging electrical power or gas lines.

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Origin

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A volcanos origin, determines its temperature.

Largest earthquake

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The largest recorded earthquake in the United States was a magnitude of 9.2 that struck Prince William Sound, Alaska on Good Friday, March 28, 1964 UTC.

The largest recorded earthquake in the world was a magnitude of 9.5 (Mw) in Chile on May 22, 1960.

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How are earthquakes recorded?

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Earthquakes are recorded by instruments called seismographs. The recording they make is called a seismogram.

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Can earthquakes be predicted?

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No, and it is unlikely they will ever be able to predict them. Scientists have tried many different ways of predicting earthquakes, but none have been successful.

Why do earthquakes happen?

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Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake.

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