At the highest average plate tectonic speed (the highest long term rate between

Question

At the highest average plate tectonic speed (the highest long term rate between two plates:youll have to look this up) approximately how long would it take to travel from San Francisco to Los Angeles (about 500 kilometers in distance)? Alternatively, another way to look at this is how long it would take for the San Andreas fault system to move Los Angeles so that it is directly west of San Franscisco?

A. 9.58 seconds

B. 251.17 million years

C. 11700 years

D. 4.55 billion years

E. 2 hrs, 2mins, 57 sec.

Explanation / Answer

The fastest techtonic plate speed is the pacific plate which is moving 7-11 cm/year. Since distance given is about 500 km, the time taken will be

t = 500km/ 11 cm/year = (500 x 1000 x 100) cm /( 11 cm/year)

=4.55 x 106 years

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