Question

t the earthquake's measure increases by 2 units on the Richter scale, it's destructive power increases by (a)100 times (b) 2 times (c) 200 times (d) 1000 times​

Answer 1

Answer:

Since modern seismographs can detect seismic waves even smaller than those originally chosen for zero magnitude, it is possible to measure earthquakes having negative magnitudes on the Richter scale. Each increase of one unit on the scale represents a 10-fold increase in the magnitude of an earthquake.

200 times it is ...

Answer 2

Answer:

The right answer to the given question is option(d): 1000 times.

Explanation:

• Richter scale is known as the quantitative measure of the magnitude of an earthquake.
• It was devised in 1935.
• The magnitude is measured using the logarithm of the height of the largest seismic wave estimated by a seismograph.
• Modern seismographs can even detect seismic waves having negative magnitude.
• In the Richter scale, one unit is equivalent to a 10-fold increase in an earthquake's magnitude.
• This scale is not linear.
• We can also say, that numbers in this scale are proportional to base-10 logarithms of the maximum wave amplitudes.

So, if the magnitude of the earthquake increases by 2 on the Richter scale then it means the destruction power is increased by 1000 times.