Destructive earthquakes have a magnitude of ________ or above on Richter scale.

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Solution

Magnitude Effects
2.5 or less Usually not felt, but can be recorded by seismograph.
2.5 to 5.4 often felt, but only causes minor damage.
5.5 to 6.0 Slight damage to buildings & others structures.
6.1 to 6.9 May cause a lot of damage in populated areas.
7.0 to 7.9 Major earthquake. serious damage.
8.0 to greater Can totally destroy communities near epicenters.
Therefore, from the above date, we conclude that earthquake of magnitude $6$ or above can be destructive.

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Similar questions

What magnitudes of earthquakes on Richter scale are considered destructive?

On Richter scale, an increase in magnitude of 4 units mean that the destructive power of the earthquake increases by 4 times.

Which of the following statements is/are correct regarding various scales used for measuring the earthquake?

1. Richter scale measures magnitude of earthquake whereas Mercalli scale is used to measure the intensity of earthquake.

2. Magnitude of earthquake depends on the destruction caused by earthquake.

3. Richter scale is a logarithmic scale.

Choose among the options given below:

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Magnitude	Effects
2.5 or less	Usually not felt, but can be recorded by seismograph.
2.5 to 5.4	often felt, but only causes minor damage.
5.5 to 6.0	Slight damage to buildings & others structures.
6.1 to 6.9	May cause a lot of damage in populated areas.
7.0 to 7.9	Major earthquake. serious damage.
8.0 to greater	Can totally destroy communities near epicenters.