Moaning is a verb.
most likely....yes
I was alerted when I heard the sound of a woman screaming, followed by a swift rustle in the nearby hedges.
Technically, yes. But this sentence obviously shouldn't be used in formal speech.
I've heard that the next album will have screaming
Speech throughout is clear and easily heard against background ambiance.
The word harmonic is an adjective in this sentence.
screaming and dogs barking
I heard Moaning because some kids were having sex.
The loud screaming heard from the next room was caused by a sudden and intense situation that prompted someone to react with a loud 'AHHHHH' sound.
Yes it is because a scream can be heard which is what onomatopoeia is so thiers your answer
Mrs. Burdine is very audible.
Yes it can be used at the end of a sentence, however, its a word which can be at the beginning, middle or end. E.g. Loudly, he ran away. She screamed loudly because she was scared. He heard someone screaming loudly.