World Geography
Which of the following is measured on the Richter scale?

Velocity of tornadoes
Density of liquids
Intensity of earthquakes
Height of mountains

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World Geography
The sidereal month may be defined as

None of these
the period in which the moon completes an orbit around the earth
the period of rotation of moon
the period in which the moon completes an orbit around the Earth and returns to the same position in the sky

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