What is known as Richter scale? State its uses.
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Richter scale is an instrument that is used to measure the absolute intensity of an earthquake with mathematical precision. It measures the power of an earthquake on a scale of 1 to 9.
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Name two man-made causes of an earthquake. Give one example.
What are known as seismic focus and epicentre with respect to an earthquake?
How are earthquakes useful?
Give any two destructive effects of earthquakes.