Question

Most dengerous earthquake number and which object were measure the earthquake?

Answer 1

Answer:

The Richter scale – also called the Richter magnitude scale or Richter's magnitude scale – is a measure of the strength of earthquakes, developed by Charles F. Richter and presented in his landmark 1935 paper, where he called it the "magnitude scale".

Answer 2

Answer:

9.5 and seismograph

Hope it helps;)