To measure the strength of an earthquake, you can use either a______scale or______scale.
A)Richter
B)seismograph
C)mercalli intensity
part:2
A)moment magnitude
B)seismogram
C)mercalli intensity
a or b
To measure the strength of an earthquake, you can use either a Richter scale or a Mercalli intensity scale.
1) Richter scale (option A): The Richter scale is a numerical scale used to measure the magnitude (strength) of an earthquake. It is based on the amplitude of seismic waves recorded by seismographs, which are instruments that detect and record ground vibrations caused by earthquakes. The Richter scale assigns a number to an earthquake, which indicates its energy release. Higher numbers on the Richter scale indicate a more powerful earthquake.
2) Mercalli intensity scale (option C): The Mercalli intensity scale measures the perceived intensity of an earthquake at different locations, rather than the actual energy release. It assesses the impacts and effects of an earthquake on people, structures, and the environment. The Mercalli intensity scale is typically reported using Roman numerals (I to XII), with higher numbers indicating more severe damage and effects.
For part two of your question:
1) Moment magnitude (option A): The moment magnitude scale, also known as the Mw scale, is a more modern and accurate scale used to measure the size or total energy release of an earthquake. It takes into account various factors, including the seismic moment of the earthquake, which reflects the area of fault rupture, the average slip along the fault, and the rigidity of the rocks. The moment magnitude scale provides a more precise and consistent measurement of earthquake size for larger events.
2) Seismogram (option B): A seismogram is the recording of ground motion produced by a seismograph during an earthquake. It shows how the ground shook at a particular location, displaying the amplitude and frequency of seismic waves over time. Seismograms are crucial in analyzing and studying earthquakes, as they provide valuable information about the characteristics and intensity of the seismic waves.
3) Mercalli intensity (option C): As mentioned earlier, the Mercalli intensity scale measures the observed effects of an earthquake at different locations. It evaluates the intensity of shaking, damage to structures, and the perception and behavior of people during the earthquake. The Mercalli intensity is determined through reports from individuals and observations made on the ground.
By using the appropriate scale or instrument, seismologists and experts can assess the strength and impacts of an earthquake, which aids in monitoring and understanding seismic activity.