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

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

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World Geography
The modern theory of plate tectonics states

All of these
the creation of oceanic crust and the drifting of continents
the convention currents within the earth's mantle cause the creation of new oceanic crust at the mid
that the oceanic crust is destroyed at areas where this crust type becomes subducted under the light

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