GEOLOGY

Detailed explanation-1: -A record produced by a seismograph on a display screen or paper printout is called a seismogram.

Detailed explanation-2: -The pen records the movement on the drum. The paper recording of an earthquake is called a seismogram.

Detailed explanation-3: -Both P and S waves travel outward from an earthquake focus inside the earth. The waves are often seen as separate arrivals recorded on seismographs at large distances from the earthquake. The direct P wave arrives first because its path is through the higher speed, dense rocks deeper in the earth.

Detailed explanation-4: -A seismogram is a tracing of earthquake motion created by a seismograph.