In 2010, Haiti was hit by a devastating earthquake which registered at 7.0 on the Richter scale. The largest recorded earthquake since 1990 occurred in 1960 in valdivia chile and registered at 9.5 on the Richter scale. About how many times greater was the intensity of the Chilean earthquake?

Respuesta :

Answer: Approx 316.228 times

Step-by-step explanation:

Let [tex]I_1[/tex] be the intensity of the earthquake in Chile

And, [tex]I_2[/tex] be the intensity of the earthquake in Haiti,

Since, Haiti was hit by a earthquake which registered at 7.0 on the Richter scale and Chile was hit by a earthquake which registered at 9.5 on the Richter scale,

Thus, for Chile,

[tex]9.5 = log (\frac{I_1}{I_0} )[/tex] --------(1) [ by the formula, [tex]R = log (\frac{I}{I_0} )[/tex]   ]

And, For Haiti,

[tex]7 = log (\frac{I_2}{I_0} )[/tex] ----------(2),

Equation (1) - Equation (1),

[tex]2.5 = log (\frac{I_1}{I_0} )-log (\frac{I_2}{I_0} )[/tex]

⇒ [tex]2.5 = log(\frac{I_1}{I_2} )[/tex]

⇒ [tex]10^{2.5} = \frac{I_1}{I_2}[/tex]

⇒ [tex]10^{2.5} = \frac{I_1}{I_2}[/tex]

⇒ [tex]316.227766017 I_2=I_1[/tex]

That is, the Intensity of Chile is approx 316.228 times of intensity of Haiti.


It should be noted that the times greater that the intensity of the Chilean earthquake was is 316.228 times.

How to calculate the earthquake intensity

From the information, Haiti was hit by a devastating earthquake which registered at 7.0 on the Richter scale an recorded earthquake in chile was at 9.5 on the Richter scale.

Based on the information, the intensity will be calculated thus:

2.5 = log(I1 / I2)

Then, the intensity will be 10 raise to the power of 2.5 which will be 316.228.

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