Which statement about seismic waves is accurate? seismic waves have uniform motion within earth's layers. seismic waves determine differences in temperature in earth's layers. seismic waves change speed when density changes in earth's layers. seismic waves only relate to earthquakes.

The answer is Seismic waves only relate to earthquakes.  Seismic waves travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, etc. It is a wave that travels through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. There are two types of seismic wave, namely, 'body wave' and 'surface wave'.

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