Does water expand more as the temperature drops even more below 0 deg? i am worried about the coolant in my rad. as the temp. is 40deg below.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods