how dose the sea floor spreading cause tectoni plates to move

Answer 1

http://www.geography4kids.com/files/earth_tectonics.html

http://www.google.com/search?q=sea+floor+spreading+tectonic+plates+for+kids&rlz=1C1AVSX_enUS414US423&espv=210&es_sm=122&tbm=isch&tbo=u&source=univ&sa=X&ei=H_dmUo3RF4nkyAGrh4CAAw&ved=0CCkQsAQ&biw=711&bih=453