How strong is a 5.1 earthquake compared to 7.1?

Another important factor to consider when comparing the strength of earthquakes is the population density of the area affected. An earthquake of magnitude 5.1 in a rural area may cause relatively little damage and injury, while the same magnitude earthquake in a densely populated urban area can cause significant damage and loss of life.

It's also important to note that the Modified Mercalli Intensity Scale (MM or MMI), is often used to evaluate damage caused by earthquakes, which is different from magnitude. Magnitude tells us how much energy was released, but the MMI scale tells us how much that energy was felt on the surface. For example, a 5.1 earthquake can cause damage and injuries in MMI scale 7 or 8, while a 7.1 earthquake can cause severe damage and injuries in MMI scale IX or X.

In summary, while a 5.1 earthquake is less strong than a 7.1 earthquake, the impact of an earthquake can vary greatly depending on a number of factors, including location, depth, and population density. It's important to always be prepared for earthquakes, regardless of magnitude