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January 26, 2015

January 26, 2015

Posted by **stephanie** on Wednesday, January 18, 2012 at 7:55pm.

an 80yrs old person?

80 years X blank per year=blank cm= blank km

- science -
**Ms. Sue**, Wednesday, January 18, 2012 at 8:03pmAre you asking about a dinner plate or a tectonic plate?

- science -
**stephanie**, Wednesday, January 18, 2012 at 8:06pmplate tectonics

- science -
**Ms. Sue**, Wednesday, January 18, 2012 at 8:22pmTectonic plates move apart at approximately 2.5 cm per year.

http://pubs.usgs.gov/gip/dynamic/understanding.html

(80 * 2.5} / 100,000 = ?

- science -
**Stephanie**, Wednesday, March 6, 2013 at 4:29pm80 years x ____ per year = ____ cm = ____ km

- science -
**Eric**, Tuesday, November 11, 2014 at 6:34pm80 years x 4in per year = 800 cm = .008 km

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