Help!
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| What is an earthquake? | An earthquake is the sudden shaking of the earth, caused by movement in the earths crust.
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| Who are the scientists who study earthquakes? | Seismologists
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| What is a seismograph and what does it do? | The instrument used to measure and record an earthquake and how long it lasted.
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| What is the Richter scale? | The original scale used to measure the magnitude of an earthquake was the Richter scale.
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| How does the Richter scale work? | It goes from 1 to 8. Each unit increase means than the earthquake was 10 times more powerful than the previous unit.
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| Why don’t seismologists use the Richter scale and use the MMS instead? | Because the Richter scale was less reliable for larger earthquake readings.
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| What is the moment magnitude scale and what is its features? | Used to measure the magnitude of an earthquake. The scale goes from 1 to 10 and is more reliable for larger earthquakes than the Richter scale.
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| Focus? | The point where an earthquake begins
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| Epicentre | The point directly above the focus. It is where the earthquake can do the most damage.
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| Shock waves | Otherwise known as seismic waves, The are waves of energy that spread out in circles from the focus.
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| Fault |
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