There is no such things as particles. It’s just wave. We are made of wave ourselves, that’s why we tend to think other wave is something … matter. But it is actually just waves observing waves, wave measuring wave, wave thinking about wave…

It can create unique landforms, such as wave-cut cliffs, sea arches, and sea stacks. Deposits by waves include beaches. They may shift along the shoreline due to longshore drift. Other wave deposits are spits, sand bars, and barrier islands.

From the smallest to the largest, waves can be classified as capillary, ultragravity, gravity, infragravity, long-period, and tidal waves.

Based on the orientation of particle motion and direction of energy, there are three categories: Mechanical waves. Electromagnetic waves….Electromagnetic Wave

• Microwaves.
• X-ray.
• Radio waves.
• Ultraviolet waves.

Waves come in two kinds, longitudinal and transverse. Transverse waves are like those on water, with the surface going up and down, and longitudinal waves are like of those of sound, consisting of alternating compressions and rarefactions in a medium.

Sea waves travel as up-and-down vibrations: the water moves up and down (without really moving anywhere) as the energy in the wave travels forward. Waves like this are called transverse waves. That just means the water vibrates at right angles to the direction in which the wave travels.

The propagation of electromagnetic waves either in a certain medium or in vacuum is due the the mutual changes between the electric and magnetic field. These variations in electric and magnetic fields fields lead to the transfer of the energy which is carried by the EM wave.

Sound travels almost indefinitely. It just gets lost in other sounds. How far you can hear the sea depends on how quiet the area is, and the sensitivity of an ear or microphone. 6km is probably not feasible for most people though.

about 12,100 feet