Earthquakes and extent of damage

I have been telling my students about the numerous earthquakes near Solomon islands last week. You can read about it from the channelnewsasia:

How is the magnitude measured on the Richter scale?
What are the factors which affect the extent of damage?
Why is a shallow focus earthquake more damaging than a deep focus earthquake?
Where are most earthquakes found?

The fear of an earthquake is real and you should know the cause of a tsunamis and the impacts of tsunamis on coastal areas.

Most importantly what are the preparedness measures?
Does the early warning system work?
Has technology helped?

Remember the eBook on the oceans fury? Do check out my earlier post:

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