b) Here are two differences between the intensity and magnitude of an earthquake: • Magnitude measures the energy released at the earthquake's source, while intensity measures the observed effects and damage caused by the earthquake at a particular location. • Magnitude is a quantitative measure, typically expressed on scales like the Richter scale, and is a single value for an earthquake. Intensity is a qualitative measure, typically expressed on scales like the Modified Mercalli Intensity (MMI) scale, and varies depending on the location relative to the epicenter. That's 2 down. 3 left today — send the next one.