Earthquake Measurement and Seismic Waves
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Earthquake Measurement and Seismic Waves

Created by
@PrestigiousOcarina

Questions and Answers

What instrument is used to detect ground vibrations and determine the magnitude of an earthquake?

Seismometers

How is earthquake magnitude calculated using the Richter Scale?

Using the height of the largest wave recorded on seismometers

What is the advantage of the Moment Magnitude Scale (Mw) over the Richter Scale (ML) when measuring earthquakes of magnitude 8 and above?

It rates earthquakes based on the total energy released during the earthquake

What causes stress to build at plate boundaries, eventually resulting in earthquakes?

<p>Tectonic plates exerting friction on one another</p> Signup and view all the answers

What happens when the rocks can no longer contain the stress at plate boundaries?

<p>The energy is released and causes the ground to vibrate violently</p> Signup and view all the answers

Why do earthquakes generally occur along plate boundaries?

<p>Because plate boundaries contain deep fractures called faults</p> Signup and view all the answers

Which term refers to the point in the earth's crust where the energy is suddenly released during an earthquake?

<p>Focus</p> Signup and view all the answers

What is the name for the smaller earthquakes that occur after the main shock along the fault line?

<p>Aftershock</p> Signup and view all the answers

What do seismic waves refer to?

<p>Waves of energy that travel through the Earth's layers</p> Signup and view all the answers

In the context of earthquakes, what does 'magnitude' refer to?

<p>The amount of energy released by an earthquake (on the Richter Scale)</p> Signup and view all the answers

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