Which of the following is correctly matched?

1. Richter scale - Magnitude

2. Mercalli scale - Intensity

3. Intensity scale range - 1 to 12

The Correct answer is 1, 2, and 3.

Key Points

• The Richter scale measures the magnitude of an earthquake, which represents the energy released at the source of the earthquake.
• The Mercalli scale measures the intensity of an earthquake, which represents the effects and damage caused by the earthquake, and is observed by people and structures.
• The intensity scale range used in the Mercalli scale ranges from 1 to 12, with 1 being not felt and 12 causing total destruction.

 Additional Information

• Richter Scale
  • The Richter scale was developed in 1935 by Charles F. Richter.
  • This scale is a logarithmic scale, meaning each whole number increase on the scale represents a tenfold increase in measured amplitude and roughly 31.6 times more energy release.
• Mercalli Scale
  • The Mercalli scale was developed by Giuseppe Mercalli in 1902.
  • This scale is qualitative and subjective, based on observations of the earthquake's effects.