Consider the following statements relating to Richer scale 1 It was devised in 1935 by Charles F Ric...........

History (NDA) Modern History ( 1857-1947)

Download Solution PDF

Consider the following statements relating to Richer scale:

1. It was devised in 1935 by Charles F. Richter

2. It describes the quantity of energy released by a single earthquake

3. Richer Scale has no upper limit

Which of the statements given above is/are correct?

1 only

1 and 2 only

2 and 3 only

1, 2 and 3

Explanation:

The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. It is a logarithmic scale that runs from I to 9, though no upper limit exists, a magnitude 7 quake is I0 times more powerful than magnitude 6 quake.