CFA #2 SAI Integrated

Front

How many seismographs are needed to TRIANGULATE an earthquake's origin?

Back

3 seismographs are needed to triangulate the origin of an earthquake.

Front

What are P waves?

Back

P waves, or primary waves, are push-pull waves that are the first to arrive after an earthquake.

Front

What type of wave is the first to arrive after an earthquake occurs?

Back

P-Wave.

Front

What is the S-P interval?

Back

The S-P interval is the time difference between the arrival of P waves and S waves, which can be used to determine the distance to the epicenter.

Front

If the S-P interval is 51 seconds, how far is the location from the epicenter?

Back

500 km.

Front

What are S waves?

Back

S waves, or secondary waves, are shear waves that arrive after P waves during an earthquake.

Front

What is the difference between P waves and S waves?

Back

P waves are compressional waves that travel faster and arrive first, while S waves are shear waves that travel slower and arrive later.

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 role of a seismograph?

Back

A seismograph is an instrument that measures and records the motion of the ground during an earthquake.

Front

What is triangulation in the context of earthquakes?

Back

Triangulation is a method used to determine the location of an earthquake's epicenter by using data from multiple seismograph stations.