Question

write short note on seismogram​

Answer 1

Answer:

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Explanation:

A seismograph is the device that scientists use to measure earthquakes. The goal of a seismograph is to accurately record the motion of the ground during a quake. If you live in a city, you may have noticed that buildings sometimes shake when a big truck or a subway train rolls by. Good seismographs are therefore isolated and connected to bedrock to prevent this sort of "data pollution."

The main problem that must be solved in creating a seismograph is that when the ground shakes, so does the instrument. Therefore, most seismographs involve a large mass of some sort. 

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Answer 2

Seismograph and a seismometer, is an instrument used to detect and record earthquake. generally it's consists of a mass attached to a fixed base.The electrical voltage is recorded on paper, magnetictape ,or another recoding medium.

Seismograph generally refers to the seismometer and it's recording device as a single unit.