If   with a  in QIV, Find

question 168

Essay

If   with A  in QIV, find

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Definitions:

Seismic Station

The location of a scientific instrument (seismograph) that measures seismic vibrations.

P-waves

Primary waves, or compressional waves, are the fastest seismic waves that travel through solids, liquids, and gases in a push-pull motion.

S-waves

Secondary or shear waves, a type of elastic wave that moves through the body of the Earth, used in the study of earthquakes and the Earth's interior.

Oceanic Trench

Deep, underwater canyons formed by the subduction of one tectonic plate under another at convergent plate boundaries.