(not homework, just a real question)... if you have a design like this (a steam generator, where the water goes in the can, and there are candles underneath the can to make steam), I get why steam would come out of the thing at the left. But why would it turn the turbine? Shouldn't the steam just rise up? I've seen videos of it working, so clearly it works. But... I don't get why the steam would have enough pressure to turn the turbine vs just going up.