During the earthquake several buildings and infrastructure were totally destroyed. Many people were killed and there was a Tsunami watch for the island. The earthquake measured on the scale?​

Richter scale

Explanation:

The earthquake is measured on Richter scale which measures the magnitude of an earthquake. The Richter scale measures the largest amplitude on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently used Moment Magnitude scale for measuring earthquake magnitudes. These scales are present in every location where tectonic plates meets or regions surrounded these plates.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

would the answer be physical geography and cultural geography i haven't studied geography but i searched it online and those are my answers.

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