which statement describes a seismograph?\nit has a flat graphing surface.\nit is used to locate an…

which statement describes a seismograph?\nit has a flat graphing surface.\nit is used to locate an earthquakes focus.\nit uses a needle on graph paper to measure seismic wave activity.\nit measures data used to find the difference between the arrival times of surface waves.

which statement describes a seismograph?\nit has a flat graphing surface.\nit is used to locate an earthquakes focus.\nit uses a needle on graph paper to measure seismic wave activity.\nit measures data used to find the difference between the arrival times of surface waves.

Answer

Brief Explanations:

A seismograph has a pen - like needle that moves on graph paper to record seismic wave activity. It doesn't have a flat graphing surface in the sense described in the first option. It is not used directly to locate the earthquake's focus (triangulation of multiple seismographs is used for that). And it doesn't measure data for the difference in arrival times of surface waves as its main function.

Answer:

It uses a needle on graph paper to measure seismic wave activity.