They can occur anywhere between the Earth's surface; about 700 kilometers<span> below the surface.</span>
To find the epicenter (the point on the earth's surface where an earthquake begins) during earthquakes, one need to view the seismogram (a record of the ground motion), and at least two other seismographs recorded for the same earthquake. Other instruments such as a map, a compass for sketching circles on the map, a ruler, and a pencil will also be used.
The following are the steps of the triangulation process in the correct order to find the epicenter during earthquakes:
Step 1: Subtract the time of P wave arrival from S wave arrival.
Step 2: See what the time difference is equal to in distance on a seismic wave chart.
Step 3: Draw circles representing the distances from at least three seismograph stations to the epicenter on a map.
Step 4: Find the point where all 3 circles intersect, and you've found the earthquake's epicenter.
Answer:
The correct answer is: a) it relies on testimony from people.
Explanation:
The Mercalli intensity scale, unlike the Richter scale, does not directly measure the energy of an earthquake. Rather, it takes into account the damage and effects that the earthquake caused. When there is little damage, it relies on the testimony of people who felt the earthquake, which may vary and is ultimately subjective to people's perception.
The Mercalli Intensity Scale ranges from "Not felt" to "Catastrophic" going through 12 scale intensities.
You are more likely to observe in a city than in the countryside:
- Violent crime
- A wider selection of goods and services
- Cultural mix
<h3 /><h3>What constitutes an urban area?</h3>
The development of social structures and institutions, such as industries, buildings, roads and structures for modes of transport. Urbanization is marked by the concentration of people and greater population growth than rural.
Therefore, in the urbanization of cities, there is a focus on social and economic development.
Find out more about urbanization here:
brainly.com/question/574901
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