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anonymous
 5 years ago
The Mid Atlantic Ridge has a halfspreading rate of about 25 mm/year.
How long would it take for rock at the boundary of the plates (new ro
anonymous
 5 years ago
The Mid Atlantic Ridge has a halfspreading rate of about 25 mm/year. How long would it take for rock at the boundary of the plates (new ro

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The Mid Atlantic Ridge has a halfspreading rate of about 25 mm/year. How long would it take for rock at the boundary of the plates (new rock just formed at the center of the ridge) to be 1 km apart, if the only factor was plate spreading

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0can anyone helpppp please

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well, since the metric system converts very nicely by simply moving a decimal point, let's convert 1mm into Km.... 1mm is .001m. 1 Km is 1000m. So, 25mm is equal to .000025Km. In the metric system, it's almost always easiest to convert from a lower unit of measurement to the standard meter, then up to the larger unit. Now we can divide the distance we need, 1Km, by the amount of spreading per year, .000025Km/year. If you keep units in mind when you perform calculations, you can cancel them out like like terms... So, \[1Km \div .000025Km/Year= 40,000 years\]
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