Page 112 - Genius Kidz Prudence Learning Sc-8

Cause of Earthquake Richter scale and the corresponding magnitude

Changes in fault zones or seismic zones due to of a earthquake :
any reason cause disturbances. These Magnitude of
earthquake on Effects of a Earthquake
disturbances cause earthquakes on earth's Richter scale
surface.
1. Less than 3.5 Non detectable
RICHTER SCALE
2. 3.5- 4.9 Minor earthquake, with no damage.
Damaging power of an earthquake is 3. 5.0-6.0 Moderate earthquake, causes
measured as a number out of 10 on a scale damage near the epicenter.

called as a Richter scale.
4. 6.1-6.9 Strong earthquake, can cause
Charles F. Richter in 1934 had invented the damage within 100 kms of
Richter scale. Amplitude of largest seismic epicenter.
wave is used to determine the magnitude of 5. 7.0-7.9 Major earthquake, severe damage.
the earthquake on Richter scale. 6. 8.0 or more Great earthquake, the most

Richter scale is a type of logarithmic scale. destructive earthquake was of 8.2
Richter scale recorded in history.

Zones which are more prone to
earthquakes are seismic zones. Map of
India is shown depicting 5 seismic zones
of India.

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