How does the use of sound inform the mood of the scene?

Which of the three categories is prominent in each of the clips? How does the use of sound inform the mood of the scene? Does it complement or work against the scene?
“Barrels” – Jaws (1975)
“What If” – You’ve Got Mail (1998)
“Time to Get a New Clock” – The Mask (1994)
    Your initial post should be at least 150 words in length. Support your claims with examples from required material(s) and/or other scholarly resources, and properly cite any references.