Write M if the statement pertains to Magnitude and I for Intensity 1. The quantified value of seismic energy produced during an earthquake. 2. The quantum of negative impact of earthquake on surrounding areas. 3. The Mercalli scale measures the intensity of an earthquake by quantifying the effects of an earthquake on the Earth's surface. 4. A Richter magnitude is calculated based on the amplitude of the largest seismic wave recorded for the earthquake. 5. The moment magnitude scale compares energy released by earthquakes and is based on the moment of the earthquake.​