Moment Magnitude Scale (MMS)

Key term for Edexcel GCSE Geography B, used in Plate Boundaries and Hazards.

Definition

The modern standard scale for measuring earthquakes, calculated using the area of the fault that slipped and total energy released.

Exam Context

Moment Magnitude Scale (MMS) appears in Edexcel GCSE Geography B revision content for Hazardous Earth, especially Plate Boundaries and Hazards and Plate boundaries.

Hazardous Earth Plate Boundaries and Hazards Plate boundaries

Found in Revision Notes

Hazardous Earth

Causes and Measurement of Earthquake Hazards

Plate Boundaries and Hazards • Plate boundaries

Revise note

Related Key Terms

Deep-focus Drawback Epicentre Focal depth

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Focus (hypocentre)

Intensity (Mercalli Scale)

Magnitude

Richter Scale