The cellar door flew open with a booming sound ,and then heard the noise much louder identify distinctive features of the extract ,how do they...

When Scrooge is at home,
upstairs in his dark suite of rooms, he hears a "clanking noise, deep down below; as if
some person were dragging a heavy chain over the casks in the wine-merchant's cellar."The
dragging of chains is an ominous sound because it is associated with sinful, perhaps even angry,
ghosts that could return from the dead to haunt the living.Scrooge even recalls that he's heard
of such things regarding ghosts in haunted houses.Next, "The cellar-door flew open with a
booming sound, and then he heard the noise much louder, on the floors below; then coming up the
stairs; then coming straight towards his door."In this way, then, Dickens renders this
passage incredibly tense and menacing: Scrooge can literally hear the sound of the chains
dragging and clanking getting closer and closer to him, and so we anticipate something horrid
and frightful getting closer and closer to him.The "booming" of the cellar door might
even make us think of the sounds of Hell.This certainly heightens tension for the reader, as for
Scrooge, making the passage more dramatic and suspenseful.This is how I would describe the mood,
certainly.

Further, the fact that the chains can
be heard from such a distance reinforces how heavy they are, and, as symbols of Marley's sins
and guilt -- for which he is now punished -- this makes sense.Scrooge hears the dragging and how
long it takes to climb the steps, how difficult it must be to wear these chains, and this has to
give him pause, later, when he considers that his own chain is even heavier than this
one!