5. convection zone
6. 27 Million F
7. photosphere
8. 17 Million degrees
I am not exactly sure the answer that you are looking for, but I will guess on what you might be looking for. If the weight of an object is greater than the weight of the liquid it's being put into, the object will sink. Although, it isn't necessarily just based upon weight, it is more dependent on density to decide if it'll float or sink.
It depends on which particle that you adding or removing