Earthquake Basics and Triangulation

Front

What is an earthquake?

Back

An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.

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 are P waves?

Back

P waves, or primary waves, are the fastest seismic waves that travel through the Earth and can move through solids and liquids.

Front

What are S waves?

Back

S waves, or secondary waves, are seismic waves that follow P waves and can only move through solids.

Front

What is triangulation in the context of earthquakes?

Back

Triangulation is a method used to determine the epicenter of an earthquake by using data from at least three different seismic stations.

Front

What is the Ring of Fire?

Back

The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.

Front

How do seismographs work?

Back

Seismographs are instruments that measure and record the motion of the ground during an earthquake.

Front

What is the difference between magnitude and intensity of an earthquake?

Back

Magnitude measures the energy released at the source of the earthquake, while intensity measures the effects of the earthquake at different locations.

Front

What is a fault line?

Back

A fault line is a crack in the Earth's surface where two blocks of land have moved past each other.

Front

What is a seismic wave?

Back

Seismic waves are waves of energy that travel through the Earth and are caused by earthquakes or other geological activity.