Earthquakes LAST

Front

What is an aftershock?

Back

An aftershock is a smaller earthquake that occurs in the same general area during the days to years following a larger earthquake.

Front

How many aftershocks typically occur after a major earthquake?

Back

It can vary widely, but significant earthquakes often have hundreds to thousands of aftershocks.

Front

What are P Waves?

Back

P Waves, or Primary Waves, are seismic waves that compress and expand the material they move through, traveling fastest through the Earth.

Front

What are S Waves?

Back

S Waves, or Secondary Waves, are seismic waves that move the ground up and down or side to side and can only travel through solids.

Front

What are surface waves?

Back

Surface waves are seismic waves that travel along the Earth's surface and typically cause the most damage during an earthquake.

Front

What is the difference between a normal fault and a reverse fault?

Back

A normal fault occurs when the hanging wall moves down relative to the footwall, while a reverse fault occurs when the hanging wall moves up.

Front

What is a strike-slip fault?

Back

A strike-slip fault is a type of fault where two blocks of crust slide past each other horizontally due to shearing forces.

Front

What is the epicenter of an earthquake?

Back

The epicenter is the point on the Earth's surface directly above the location where an earthquake originates.

Front

What is the magnitude of an earthquake?

Back

Magnitude is a measure of the energy released during an earthquake, often measured on the Richter scale or moment magnitude scale.

Front

What is a seismogram?

Back

A seismogram is a record produced by a seismograph that shows the motion of the ground during an earthquake.