For instance, seismic waves carry energy from the source of ... Introduce to your students the two simplest types of wave interactions with rocks: reflection and refraction. Ask students to ...

The study of seismic waves provides ... which cannot be observed directly. P waves are detected on the opposite side of the Earth. Refractions between layers cause two shadow zones, where no ...

When the waves cross the boundary between two different layers ... It is the slowest of the three types of seismic wave. Surface waves usually have larger amplitude than the other waves and ...

Soon a little bit of foam rubber along the crack (the fault) will break and the two pieces will suddenly slip past each other. That sudden breaking of the foam rubber is the earthquake. That's what ...

Earthquakes generally produce two types of seismic waves in the initial stage. One is “preliminary” waves that travel about 7 kilometers per second, known as P waves. The other is S waves ...

which uses "electrical energy . . . as a wave source" that "monitor[s] seismic wave energy" on dry, wet, and frozen diabase samples. Experimentation revealed that the seismic velocities of the dry ...