Temperature is a physical property that determines the direction of heat flow. true or false

True.

Explanation:

According to the zeroth law of thermodynamics when two systems are in contact there will be a flow of heat till these two systems reach the thermal equilibrium.

The heat always flows when there is a temperature difference if there is no temperature difference there will be no heat flow and heat always flow from a hotter body to a colder body.  

Therefore, by the above discussion, it is clear that the temperature is a physical property that determines the direction of the flow of heat.

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