Earthquakes

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.

Reconstruction

Dune

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

no p waves travel faster than s waves

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.

A Fault

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

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

tsunami

Seismic waves are associated with earthquakes.

Because S waves can not go through the outer core.

No, but it would be much stronger.

true

Desert soils

loess

Sweg

epicenter

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

It is a seismomiter.

Seismic Waves