Question

describe how a seismograph works

Answer 1

Answer:

Seismographs record seismic waves. They contain a weight and a pen attached to a spring (below). The seismograph is bolted to the ground so during an earthquake it moves with the ground, whilst the weight and pen remain still. The pen moves across a rotating paper roll recording the seismic waves.

Explanation:

Answer 2

Answer:

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Explanation:

Seismographs are instruments used to record the motion of the ground during an earthquake. ... As the seismograph shakes under the mass, the recording device on the mass records the relative motion between itself and the rest of the instrument, thus recording the ground motion.

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