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Discuss the Measurement of Earthquakes.

Discuss the Measurement of Earthquakes.

Answers

Martin
Seismograph is a pendulum based instrument used to measure earthquakes.
It records seismic impulses on a graph-like record called seismogram mounted on it.
Earthquakes are measured by their intensity and magnitude.

Intensity

-Measure of how strong/hard the quake shakes the ground.
It’s seen from the effects the earthquake has on people, buildings and other structures.
It’s measured on the Mercalli Scale which uses a scale running from Roman i-xiii e.g.
- I- description -imperceptible
- V-rather strong-sleepers are awakened and there is swinging of objects.
-VIII-destructive-gaping cracks in walls some brought down.
- XII- major catastrophe-every building destroyed.

Magnitude

-Measure of amount of energy given off by an earthquake.
It’s measured on Ritcher Scale which ranges from 0-8.9.
Intensity values depend on how far a place is from epicentre.
The higher the scale the more severe the earthquake is.

- Intensity I-magnitude 2
- Intensity VIII-magnitude 6
-Intensity XII-magnitude 8.5.
marto answered the question on March 25, 2019 at 07:27

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