Measuring earthquakes is important for a range of reasons. These include: to allow seismologists and other scientists to develop their understanding of earthquakes and their causes. to allow us to make meaningful comparisons between earthquakes to make planning and risk assessment more meaningful and effective.
Answer:
Correct answer is Christopher Columbus, a famous Italian sailor who sailed under Spanish flag. While searching for the sea route that will take him to India he came across a new continent in 1492. He actually reached what we know today as Bahamas. By doing this he opened Age of exploration for many people who came afterwards.
Explanation:
Many European sailors, especially from Spain and Portugal were trying to find a sea route to Asia. One of them was Columbus, who tried to do that by sailing towards west. He failed to reach India, but unknowingly reached the shores of American continent. When people realized that he actually discovered a new continent, many explorers including John Cabot, Cartier, Amerigo Vespucci and others continued to explore the new continent.
Thee true statement is that Earthquake magnitude is based on ground motion recorded by a seismograph; intensity is based on the amount of damage produced.
<h3>How is the magnitude of an earthquake known by a seismograph?</h3>
The Richter magnitude of an earthquake is known to be seen through the use of the logarithm of the amplitude of waves as recorded by a seismographs.
The different Adjustments rates are included for the variation that exist between the distance from various seismographs and the epicenter of the earthquakes.
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