Does a star's apparent brightness depend only on its distance from earth?

I dont think so. It also probably matters what type of str it is

The luminosity of a star, on the other hand, is the amount of light it emits 
from its surface However, apparent brightness is not an intrinsic property of
the star; it depends on your location

Magma  is composed of molten rock and is  stored  in the earth's crust. lava is  magma  that reaches the surface of our planet through a volcano vent.