The Outer core isn't on the out side of the Earth, it is on the out side of the center of the Earth.And is all liquid .And it's above the inner core and under neath the mantle And the temperature of the outer core ranges to about 4400 celsiouse . But it can also range up to around 6100 celsiouse . Also the heat from the outer core goes up to the mantle. Which will cause the mantle to either heat up or cool off. If the mantle heats up some of that heat can move up to the crust.