![chords to beneath your beautiful chords to beneath your beautiful](https://www.primeauguitar.com/wp-content/uploads/2019/07/Screen-Shot-2019-07-27-at-2.45.26-PM-1.png)
![chords to beneath your beautiful chords to beneath your beautiful](https://i.pinimg.com/originals/66/59/c7/6659c71950fa70e91ddf68d052ede287.png)
To get the distance to the epicenter of the quake, they compare the arrival times of S- and P-waves, which travel at different speeds.
![chords to beneath your beautiful chords to beneath your beautiful](https://img.youtube.com/vi/Z5jWsM07fuI/mqdefault.jpg)
Visualizing water waves is useful because there is more to it than just a mental image. Even radio waves are most easily understood using an analogy with water waves.
![chords to beneath your beautiful chords to beneath your beautiful](https://www.guitardownunder.com/_images/chordFolder/your_beautiful.jpg)
For earthquakes, there are several types of disturbances, including disturbance of Earth’s surface and pressure disturbances under the surface. For sound waves, the disturbance is a change in air pressure, perhaps created by the oscillating cone inside a speaker. For water waves, the disturbance is in the surface of the water, perhaps created by a rock thrown into a pond or by a swimmer splashing the surface repeatedly. More precisely, a wave is a disturbance that propagates, or moves from the place it was created. What do we mean when we say something is a wave? The most intuitive and easiest wave to imagine is the familiar water wave. Waves in the ocean behave similarly to all other types of waves.