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Earthquakes

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Jayde Bins

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โˆ™ 2021-09-30 20:42:43
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Cards in this guide (21)
How many earthquakes happen each day

Approximately 275 that are large enough to be felt by humans. For more information, see below:

According to the US Geological Survey there are approximately 1,000,000 earthquakes around the world every year (although the vast majority of these are so small they can only be detected by sensitive scientific equipment).

Of these 1,000,000, approximately 1/10 are large enough to be felt by humans. This means that on any given day there will be an average of 2750 earthquakes around the world of which 275 are large enough to be felt by humans.

Perhaps even more surprisingly, on average there are around 100 earthquakes a year that are large enough to cause damage (however they often don't because they occur away from inhabited areas). This means there is a little under a 1 in 3 chance of there being a "large" earthquake somewhere in the world on any given day of the year.

What is the name given to the period immediately following the Civil War

Reconstruction

What is a mound of wind deposited sand

Dune

What forms sand dunes

Wind forms sand dunes by picking up dry sediments and accumulating them over time to create over time.

Do s-waves travel faster than p-waves

no p waves travel faster than s waves

How is the intensity of an earthquake measured

It is measured based on witness reports of the perceived violence of ground shaking, on the damage to buildings and other structures and based on ground accelerations as measured by seismometers.

What is a break in a rock mass along which movement occurs

A Fault

What is the point that a earthquake originates

The focus / hypocentre is the point within the earth where an earthquake originates.

What earthquakes follow earthquakes

A smaller earthquake that follows a larger one is called an aftershock.

How do you say tsunami in french

tsunami

What are seismic waves associated with

Seismic waves are associated with earthquakes.

How did seismologist determine that the outer core of the earth is liquid

Because S waves can not go through the outer core.

Is A Richter and Moment Magnitude 8 earthquake twice as large as a Richter or Moment Magnitude 4 earthquake

No, but it would be much stronger.

Is it true or false that the closer an earthquake the greater the time between the arrival of P waves and the arrival of S waves

true

What are soils that get less 25cm of rain per year

Desert soils

What is windblown silt that blankets a landscape

loess

What describes physical features on Earth that form political divisions

Sweg

What is the term used to define the exact location of an earthquake

epicenter

What is the similarity between a fault and a fault zone

A fault is where to tectonic plates meet but a fault zone is the area around a fault.

What is the name of the machine that rates the amount of shaking from an earthquake

It is a seismomiter.

What are waves of energy that travel through Earth and away from an earthquake in all directions called

Seismic Waves

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