Question

complete the sentence using the word seismometer, seismogram, or seismograph. a \boxed{} is the paper record upon which the seismic waves are recorded in a seismograph.

Explanation:

A seismograph is the full system that detects seismic waves, a seismometer is the sensing part of that system, and a seismogram is the physical (or digital) record of the seismic waves produced by the seismograph. The sentence specifically refers to the paper record of seismic waves.

Answer:

seismogram