P-waves (Primary Waves)
* Mode of travel: Compressional
* Motion: Particles move back and forth in the same direction as the wave travels. Imagine a slinky being pushed and pulled.
* Speed: Fastest seismic wave, traveling through solids, liquids, and gases.
* Named "P" because they arrive first at a seismograph.
S-waves (Secondary Waves)
* Mode of travel: Shear
* Motion: Particles move perpendicular to the direction the wave travels. Imagine shaking a rope up and down.
* Speed: Slower than P-waves, only travel through solids.
* Named "S" because they arrive second at a seismograph.
Surface Waves
* Mode of travel: Along the Earth's surface
* Motion: More complex than P and S waves, with a combination of compression and shear motions.
* Types:
* Love waves: Horizontal motion, similar to the shaking of a rope.
* Rayleigh waves: Rolling motion, like waves on the ocean surface.
* Speed: Slower than S-waves, but cause the most damage because they are the largest in amplitude.
In summary, the names of earthquake waves reflect their order of arrival at a seismograph (P for primary, S for secondary) and their unique motion patterns.
