Earthquake and Volcanoes — Geography STD 11 Arts — Question
Gujarat BoardEnglish MediumSTD 11 ArtsGeographyEarthquake and Volcanoes3 Marks
Question
Make a short note on “Earthquake Graphs”.
✓
Answer
The science that studies earthquakes is called seismology
The word is derived from the Greek word seismos which means earthquake.
Earthquake graphs provide information about the magnitude of an earthquake.
The main parts of this machine have a hanging pendulum. Its upper end remains attached to a column or rod.
While the other end is left open for movement and touches a cylinder wrapped around paper or graph paper.
It also has to do with a watch.
At the time of an earthquake, small and large lines are drawn on the rolled paper on the cylinder according to the vibration velocity.
Time is also recorded due to the connection with the clock.
Comparison of the seismic graphs recorded on the seismic charts kept at different places gives information about the seismic origin and seismic emission center.
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