4. Ask your students where they think the seismic waves of an earthquake originate ... Introduce to your students the two simplest types of wave interactions with rocks: reflection and refraction.

The core itself consists of a solid inner core and a liquid outer core. There are three types of seismic waves – P waves, S waves and surface waves. P waves are longitudinal waves, and their ...

They detect seismic waves and magnify ground movement by mechanical ... A seismogram is a paper document that displays summary information about the magnitude and location of an earthquake. There are ...